diff --git a/README.md b/README.md
index 2f94cb0d1..005051a12 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Nighthawk currently offers:
 - A load testing client which supports HTTP/1.1 and HTTP/2 over HTTP and HTTPS.
 (HTTPS certificates are not yet validated).
 - A simple [test server](source/server/README.md) which is capable of generating dynamic response sizes, as well as inject delays.
-
+- A binary to transform nighthawk output to well-known formats, allowing integration with other systems and dashboards.
 
 ## Prerequisites
 
@@ -55,12 +55,13 @@ bazel-bin/nighthawk_client  [--trace <uri format>]
 |CONNECT|OPTIONS|TRACE>] [--address-family
 <auto|v4|v6>] [--burst-size <uint32_t>]
 [--prefetch-connections] [--output-format
-<json|human|yaml|dotted>] [-v <trace|debug
-|info|warn|error|critical>] [--concurrency
-<string>] [--h2] [--timeout <uint32_t>]
-[--duration <uint32_t>] [--connections
-<uint32_t>] [--rps <uint32_t>] [--]
-[--version] [-h] <uri format>
+<json|human|yaml|dotted|fortio>] [-v <trace
+|debug|info|warn|error|critical>]
+[--concurrency <string>] [--h2] [--timeout
+<uint32_t>] [--duration <uint32_t>]
+[--connections <uint32_t>] [--rps
+<uint32_t>] [--] [--version] [-h] <uri
+format>
 
 
 Where:
@@ -111,9 +112,9 @@ Release requests in bursts of the specified size (default: 0).
 --prefetch-connections
 Prefetch connections before benchmarking (HTTP/1 only).
 
---output-format <json|human|yaml|dotted>
-Output format. Possible values: {"json", "human", "yaml", "dotted"}.
-The default output format is 'human'.
+--output-format <json|human|yaml|dotted|fortio>
+Output format. Possible values: {"json", "human", "yaml", "dotted",
+"fortio"}. The default output format is 'human'.
 
 -v <trace|debug|info|warn|error|critical>,  --verbosity <trace|debug
 |info|warn|error|critical>
@@ -208,14 +209,15 @@ Nighthawk comes with a tool to transform its json output to its other supported
 USAGE:
 
 bazel-bin/nighthawk_output_transform  --output-format <json|human|yaml
-|dotted> [--] [--version] [-h]
+|dotted|fortio> [--] [--version]
+[-h]
 
 
 Where:
 
---output-format <json|human|yaml|dotted>
+--output-format <json|human|yaml|dotted|fortio>
 (required)  Output format. Possible values: {"json", "human", "yaml",
-"dotted"}.
+"dotted", "fortio"}.
 
 --,  --ignore_rest
 Ignores the rest of the labeled arguments following this flag.
@@ -305,6 +307,21 @@ client.upstream_rq_total                9994        1998.80
 [21:28:18.522403][27849][I] [source/client/client.cc:279] Done.
 ```
 
+## Visualizing the output of a benchmark
+
+Nighthawk supports transforming the output into other well-known formats, such as:
+
+- `dotted`: Provides integration with Prometheus
+- `fortio`: Provides integration with [Fortio's report-only UI](https://github.com/fortio/fortio#report-only-ui)
+
+The following is an example of a nighthawk benchmark visualized via the Fortio UI.
+
+```bash
+fortio report --data-dir ./samples/fortio_data
+```
+
+![Fortio Large Report](./samples/fortio_reports/large.png)
+
 ## Accuracy and repeatability considerations when using the Nighthawk client
 
 - Processes not related to the benchmarking task at hand may add significant noise. Consider stopping any
diff --git a/api/client/options.proto b/api/client/options.proto
index df41aeee0..947c97b3f 100644
--- a/api/client/options.proto
+++ b/api/client/options.proto
@@ -47,6 +47,7 @@ message OutputFormat {
     HUMAN = 2;
     YAML = 3;
     DOTTED = 4;
+    FORTIO = 5;
   }
   OutputFormatOptions value = 1;
 }
diff --git a/api/client/transform/BUILD b/api/client/transform/BUILD
new file mode 100644
index 000000000..dfa7f8a80
--- /dev/null
+++ b/api/client/transform/BUILD
@@ -0,0 +1,14 @@
+licenses(["notice"])  # Apache 2
+
+load("@envoy//bazel:envoy_build_system.bzl", "envoy_package")
+load("@envoy_api//bazel:api_build_system.bzl", "api_cc_py_proto_library")
+
+envoy_package()
+
+api_cc_py_proto_library(
+    name = "transform",
+    srcs = [
+        "fortio.proto",
+    ],
+    visibility = ["//visibility:public"],
+)
diff --git a/api/client/transform/fortio.proto b/api/client/transform/fortio.proto
new file mode 100644
index 000000000..3f312a6ba
--- /dev/null
+++ b/api/client/transform/fortio.proto
@@ -0,0 +1,57 @@
+syntax = "proto3";
+
+package nighthawk.client;
+
+import "google/protobuf/duration.proto";
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/wrappers.proto";
+import "validate/validate.proto";
+
+// This proto represents that output format that Fortio expects when converted to JSON.
+// Nighthawk can fill in this proto, and then unmarshal to the Fortio-compatible JSON.
+// Therefore, this proto may not follow conventions. aip.dev/not-precedent
+message FortioResult {
+  // Disable validate because it doesn't work well with fields that are not all lowercase.
+  // The field cases must match the final output JSON that fortio-ui expects.
+  option (validate.disabled) = true;
+
+  string Labels = 1;
+
+  google.protobuf.Timestamp StartTime = 2;
+
+  uint32 RequestedQPS = 3;
+
+  google.protobuf.Duration RequestedDuration = 4;
+
+  double ActualQPS = 5;
+
+  double ActualDuration = 6;
+
+  uint32 NumThreads = 7;
+
+  DurationHistogram DurationHistogram = 8;
+
+  map<string, uint64> RetCodes = 11;
+
+  string URL = 12;
+}
+
+message DurationHistogram {
+  option (validate.disabled) = true;
+
+  uint64 Count = 1;
+
+  repeated DataEntry Data = 2;
+}
+
+message DataEntry {
+  option (validate.disabled) = true;
+
+  double Start = 1;
+
+  double End = 2;
+
+  double Percent = 3;
+
+  uint64 Count = 4;
+}
\ No newline at end of file
diff --git a/samples/fortio_data/large.json b/samples/fortio_data/large.json
new file mode 100644
index 000000000..83e1def5a
--- /dev/null
+++ b/samples/fortio_data/large.json
@@ -0,0 +1,456 @@
+{
+ "DurationHistogram": {
+  "Data": [
+   {
+    "Start": 0.000135935,
+    "End": 0.000135935,
+    "Percent": 0,
+    "Count": "1"
+   },
+   {
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+    "Percent": 10,
+    "Count": "1799"
+   },
+   {
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+    "End": 0.000164175,
+    "Percent": 20,
+    "Count": "1801"
+   },
+   {
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+    "End": 0.000169287,
+    "Percent": 30,
+    "Count": "1797"
+   },
+   {
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+    "End": 0.000175455,
+    "Percent": 40,
+    "Count": "1799"
+   },
+   {
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+    "End": 0.000182039,
+    "Percent": 50,
+    "Count": "1797"
+   },
+   {
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+    "End": 0.000186415,
+    "Percent": 55.000000000000007,
+    "Count": "901"
+   },
+   {
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+    "End": 0.000191287,
+    "Percent": 60,
+    "Count": "898"
+   },
+   {
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+    "End": 0.000199335,
+    "Percent": 65,
+    "Count": "900"
+   },
+   {
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+    "Percent": 70,
+    "Count": "899"
+   },
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+    "Percent": 75,
+    "Count": "899"
+   },
+   {
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+    "End": 0.000264639,
+    "Percent": 77.5,
+    "Count": "450"
+   },
+   {
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+    "End": 0.000275279,
+    "Percent": 80,
+    "Count": "451"
+   },
+   {
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+    "End": 0.000283023,
+    "Percent": 82.5,
+    "Count": "450"
+   },
+   {
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+    "End": 0.000291807,
+    "Percent": 85,
+    "Count": "448"
+   },
+   {
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+    "Percent": 87.5,
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+   },
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+   },
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+    "Percent": 94.375,
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+   },
+   {
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+    "Percent": 95.625,
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+    "Percent": 99.989013671875,
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+   },
+   {
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+    "End": 0.019186687,
+    "Percent": 100,
+    "Count": "0"
+   }
+  ],
+  "Count": "17988"
+ },
+ "RetCodes": {
+  "200": "18000"
+ },
+ "Labels": "A random label",
+ "StartTime": "2019-10-18T19:29:33Z",
+ "RequestedQPS": 50,
+ "RequestedDuration": "30s",
+ "ActualQPS": 50,
+ "ActualDuration": 30,
+ "NumThreads": 1,
+ "URL": "http://127.0.0.1:10001/"
+}
\ No newline at end of file
diff --git a/samples/fortio_data/small.json b/samples/fortio_data/small.json
new file mode 100644
index 000000000..6c0f6b963
--- /dev/null
+++ b/samples/fortio_data/small.json
@@ -0,0 +1,198 @@
+{
+ "DurationHistogram": {
+  "Data": [
+   {
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+    "Percent": 10,
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+   },
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+   {
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+   {
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+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.079327231,
+    "Percent": 97.1875,
+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.079327231,
+    "Percent": 97.5,
+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.079327231,
+    "Percent": 97.8125,
+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.084357119,
+    "Percent": 98.125,
+    "Count": "1"
+   },
+   {
+    "Start": 0.084357119,
+    "End": 0.084357119,
+    "Percent": 100,
+    "Count": "0"
+   }
+  ],
+  "Count": "48"
+ },
+ "RetCodes": {
+  "200": "60"
+ },
+ "Labels": "A random label",
+ "StartTime": "2019-10-16T00:30:12Z",
+ "RequestedQPS": 1,
+ "RequestedDuration": "5s",
+ "ActualQPS": 1,
+ "ActualDuration": 5,
+ "NumThreads": 1,
+ "URL": "http://127.0.0.1:10000/"
+}
\ No newline at end of file
diff --git a/samples/fortio_reports/large.png b/samples/fortio_reports/large.png
new file mode 100644
index 000000000..dcf4262b8
Binary files /dev/null and b/samples/fortio_reports/large.png differ
diff --git a/samples/fortio_reports/small.png b/samples/fortio_reports/small.png
new file mode 100644
index 000000000..14e3bb8a5
Binary files /dev/null and b/samples/fortio_reports/small.png differ
diff --git a/source/client/BUILD b/source/client/BUILD
index 1a3bee48f..76ed15a80 100644
--- a/source/client/BUILD
+++ b/source/client/BUILD
@@ -115,6 +115,7 @@ envoy_cc_library(
     visibility = ["//visibility:public"],
     deps = [
         "//api/client:base_cc_proto",
+        "//api/client/transform:transform_cc_proto",
         "//include/nighthawk/client:client_includes",
         "@envoy//source/common/network:utility_lib_with_external_headers",
         "@envoy//source/common/protobuf:utility_lib_with_external_headers",
diff --git a/source/client/factories_impl.cc b/source/client/factories_impl.cc
index e50eacc4d..142283b4d 100644
--- a/source/client/factories_impl.cc
+++ b/source/client/factories_impl.cc
@@ -3,6 +3,8 @@
 #include "external/envoy/source/common/http/header_map_impl.h"
 #include "external/envoy/source/common/stats/isolated_store_impl.h"
 
+#include "api/client/options.pb.h"
+
 #include "common/header_source_impl.h"
 #include "common/platform_util_impl.h"
 #include "common/rate_limiter_impl.h"
@@ -88,6 +90,8 @@ OutputFormatterPtr OutputFormatterFactoryImpl::create(
     return std::make_unique<Client::YamlOutputFormatterImpl>();
   case nighthawk::client::OutputFormat::DOTTED:
     return std::make_unique<Client::DottedStringOutputFormatterImpl>();
+  case nighthawk::client::OutputFormat::FORTIO:
+    return std::make_unique<Client::FortioOutputFormatterImpl>();
   default:
     NOT_REACHED_GCOVR_EXCL_LINE;
   }
diff --git a/source/client/output_formatter_impl.cc b/source/client/output_formatter_impl.cc
index 5ad36b905..9d780d439 100644
--- a/source/client/output_formatter_impl.cc
+++ b/source/client/output_formatter_impl.cc
@@ -5,8 +5,14 @@
 #include <chrono>
 #include <sstream>
 
+#include "nighthawk/common/exception.h"
+
 #include "external/envoy/source/common/protobuf/utility.h"
 
+#include "api/client/transform/fortio.pb.h"
+
+#include "absl/strings/str_cat.h"
+
 namespace Nighthawk {
 namespace Client {
 
@@ -138,5 +144,125 @@ DottedStringOutputFormatterImpl::formatProto(const nighthawk::client::Output& ou
   return ss.str();
 }
 
+const nighthawk::client::Result&
+FortioOutputFormatterImpl::getGlobalResult(const nighthawk::client::Output& output) const {
+  for (const auto& nh_result : output.results()) {
+    if (nh_result.name() == "global") {
+      return nh_result;
+    }
+  }
+
+  throw NighthawkException("Nighthawk output was malformed, contains no 'global' results.");
+}
+
+const nighthawk::client::Counter&
+FortioOutputFormatterImpl::getCounterByName(const nighthawk::client::Result& result,
+                                            absl::string_view counter_name) const {
+  for (const auto& nh_counter : result.counters()) {
+    if (nh_counter.name() == counter_name) {
+      return nh_counter;
+    }
+  }
+
+  throw NighthawkException(absl::StrCat(
+      "Nighthawk result was malformed, contains no counter with name: ", counter_name));
+}
+
+const nighthawk::client::Statistic& FortioOutputFormatterImpl::getRequestResponseStatistic(
+    const nighthawk::client::Result& result) const {
+  for (auto const& nh_stat : result.statistics()) {
+    if (nh_stat.id() == "benchmark_http_client.request_to_response") {
+      return nh_stat;
+    }
+  }
+
+  throw NighthawkException("Nighthawk result was malformed, contains no "
+                           "'benchmark_http_client.request_to_response' statistic.");
+}
+
+std::string FortioOutputFormatterImpl::formatProto(const nighthawk::client::Output& output) const {
+  nighthawk::client::FortioResult fortio_output;
+
+  // TODO(#182): Not needed but nice to have, displays in the UI
+  fortio_output.set_labels("");
+  fortio_output.mutable_starttime()->set_seconds(output.timestamp().seconds());
+  fortio_output.set_requestedqps(output.options().requests_per_second().value());
+  fortio_output.set_url(output.options().uri().value());
+
+  // Actual and requested durations are the same
+  const auto& nh_duration = output.options().duration().seconds();
+  fortio_output.mutable_requestedduration()->set_seconds(nh_duration);
+  fortio_output.set_actualduration(nh_duration);
+
+  // This displays as "connections" in the UI, not threads.
+  // TODO(#186): This field may not be accurate for for HTTP2 load tests.
+  fortio_output.set_numthreads(output.options().connections().value());
+
+  // Get the result that represents all workers (global)
+  const auto& nh_global_result = this->getGlobalResult(output);
+
+  // Fill in the actual QPS based on the counters
+  const auto& nh_rq_counter = this->getCounterByName(nh_global_result, "upstream_rq_total");
+  const double actual_qps = static_cast<double>(nh_rq_counter.value()) / nh_duration;
+  fortio_output.set_actualqps(actual_qps);
+
+  // Fill in the number of successful responses.
+  // Fortio-ui only reads the 200 OK field, other fields are never displayed.
+  fortio_output.mutable_retcodes()->insert({"200", 0});
+  try {
+    const auto& nh_2xx_counter = this->getCounterByName(nh_global_result, "benchmark.http_2xx");
+    fortio_output.mutable_retcodes()->at("200") = nh_2xx_counter.value();
+  } catch (const NighthawkException& e) {
+    // If this field doesn't exist, then there were no 2xx responses
+    fortio_output.mutable_retcodes()->at("200") = 0;
+  }
+
+  // The core of the transformation is here: All the percentiles to display the dashboard
+  const auto& nh_stat = this->getRequestResponseStatistic(nh_global_result);
+
+  // Set the count (number of data points)
+  nighthawk::client::DurationHistogram fortio_histogram;
+  fortio_histogram.set_count(nh_stat.count());
+
+  uint64_t prev_fortio_count = 0;
+  double prev_fortio_end = 0;
+  for (int i = 0; i < nh_stat.percentiles().size(); i++) {
+
+    nighthawk::client::DataEntry fortio_data_entry;
+    const auto& nh_percentile = nh_stat.percentiles().at(i);
+
+    // fortio_percent = 100 * nh_percentile
+    fortio_data_entry.set_percent(nh_percentile.percentile() * 100);
+
+    // fortio_count = nh_count - prev_fortio_count
+    fortio_data_entry.set_count(nh_percentile.count() - prev_fortio_count);
+
+    // fortio_end = nh_duration (need to convert formats)
+    const double nh_percentile_duration_sec =
+        Envoy::Protobuf::util::TimeUtil::DurationToNanoseconds(nh_percentile.duration()) / 1e9;
+    fortio_data_entry.set_end(nh_percentile_duration_sec);
+
+    // fortio_start = prev_fortio_end
+    if (i == 0) {
+      // If this is the first entry, force the start and end time to be the same.
+      // This prevents it from starting at 0, making it disproportionally big in the UI.
+      prev_fortio_end = nh_percentile_duration_sec;
+    }
+    fortio_data_entry.set_start(prev_fortio_end);
+
+    // Update tracking variables
+    prev_fortio_count = nh_percentile.count();
+    prev_fortio_end = nh_percentile_duration_sec;
+
+    // Set the data entry in the histogram only if it's not the first entry
+    fortio_histogram.add_data()->CopyFrom(fortio_data_entry);
+  }
+
+  // Set the histogram in main fortio output
+  fortio_output.mutable_durationhistogram()->CopyFrom(fortio_histogram);
+
+  return Envoy::MessageUtil::getJsonStringFromMessage(fortio_output, true, true);
+}
+
 } // namespace Client
 } // namespace Nighthawk
\ No newline at end of file
diff --git a/source/client/output_formatter_impl.h b/source/client/output_formatter_impl.h
index 2ba6967eb..7e83ddfa8 100644
--- a/source/client/output_formatter_impl.h
+++ b/source/client/output_formatter_impl.h
@@ -8,6 +8,8 @@
 
 #include "external/envoy/source/common/protobuf/protobuf.h"
 
+#include "api/client/output.pb.h"
+
 #include "absl/strings/string_view.h"
 
 namespace Nighthawk {
@@ -47,5 +49,41 @@ class DottedStringOutputFormatterImpl : public OutputFormatterImpl {
   std::string formatProto(const nighthawk::client::Output& output) const override;
 };
 
+class FortioOutputFormatterImpl : public OutputFormatterImpl {
+public:
+  std::string formatProto(const nighthawk::client::Output& output) const override;
+
+protected:
+  /**
+   * Return the result that represents all workers (the one with the "global" name).
+   *
+   * @param output the Nighthawk output proto
+   * @return the corresponding global result
+   * @throws NighthawkException if global result is not found
+   */
+  const nighthawk::client::Result& getGlobalResult(const nighthawk::client::Output& output) const;
+
+  /**
+   * Return the counter with the specified name.
+   *
+   * @param result a single Nighthawk result, preferably the global result
+   * @param counter_name the name of the counter to return
+   * @return the corresponding counter
+   * @throws NighthawkException if counter with given name is not found
+   */
+  const nighthawk::client::Counter& getCounterByName(const nighthawk::client::Result& result,
+                                                     absl::string_view counter_name) const;
+
+  /**
+   * Return the statistic that represents the request/response round-trip times.
+   *
+   * @param result a single Nighthawk result, preferably the global result
+   * @return the corresponding request/response statistic
+   * @throws NighthawkException if request/response statistic is not found
+   */
+  const nighthawk::client::Statistic&
+  getRequestResponseStatistic(const nighthawk::client::Result& result) const;
+};
+
 } // namespace Client
 } // namespace Nighthawk
\ No newline at end of file
diff --git a/test/BUILD b/test/BUILD
index f1f11246a..761dacb4b 100644
--- a/test/BUILD
+++ b/test/BUILD
@@ -104,6 +104,8 @@ envoy_cc_test(
     data = [
         "test_data/output_formatter.dotted.gold",
         "test_data/output_formatter.json.gold",
+        "test_data/output_formatter.medium.fortio.gold",
+        "test_data/output_formatter.medium.proto.gold",
         "test_data/output_formatter.txt.gold",
         "test_data/output_formatter.yaml.gold",
     ],
diff --git a/test/factories_test.cc b/test/factories_test.cc
index 5eae116dd..aa9d34589 100644
--- a/test/factories_test.cc
+++ b/test/factories_test.cc
@@ -122,7 +122,8 @@ TEST_P(OutputFormatterFactoryTest, TestCreation) { testOutputCollector(GetParam(
 INSTANTIATE_TEST_SUITE_P(
     OutputFormats, OutputFormatterFactoryTest,
     ValuesIn({nighthawk::client::OutputFormat::HUMAN, nighthawk::client::OutputFormat::JSON,
-              nighthawk::client::OutputFormat::YAML, nighthawk::client::OutputFormat::DOTTED}));
+              nighthawk::client::OutputFormat::YAML, nighthawk::client::OutputFormat::DOTTED,
+              nighthawk::client::OutputFormat::FORTIO}));
 
 } // namespace Client
 } // namespace Nighthawk
diff --git a/test/output_formatter_test.cc b/test/output_formatter_test.cc
index cb96cebfd..c8b8a7edf 100644
--- a/test/output_formatter_test.cc
+++ b/test/output_formatter_test.cc
@@ -1,9 +1,13 @@
 #include <chrono>
 
+#include "nighthawk/common/exception.h"
+
+#include "external/envoy/source/common/protobuf/message_validator_impl.h"
 #include "external/envoy/test/test_common/file_system_for_test.h"
 #include "external/envoy/test/test_common/simulated_time_system.h"
 
 #include "api/client/options.pb.h"
+#include "api/client/output.pb.h"
 
 #include "common/statistic_impl.h"
 
@@ -93,7 +97,74 @@ TEST_F(OutputCollectorTest, getLowerCaseOutputFormats) {
   auto output_formats = OutputFormatterImpl::getLowerCaseOutputFormats();
   // When you're looking at this code you probably just added an output format.
   // This is to point out that you might want to update the list below and add a test above.
-  ASSERT_THAT(output_formats, ElementsAre("json", "human", "yaml", "dotted"));
+  ASSERT_THAT(output_formats, ElementsAre("json", "human", "yaml", "dotted", "fortio"));
+}
+
+class FortioOutputCollectorTest : public OutputCollectorTest {
+public:
+  FortioOutputCollectorTest() {
+    counters_["upstream_rq_total"] = 3;
+    counters_["benchmark.http_2xx"] = 4;
+    StatisticPtr used_statistic = std::make_unique<StreamingStatistic>();
+    used_statistic->setId("benchmark_http_client.request_to_response");
+    used_statistic->addValue(4000000);
+    statistics_.push_back(std::move(used_statistic));
+    EXPECT_CALL(options_, toCommandLineOptions())
+        .WillOnce(Return(ByMove(
+            std::make_unique<nighthawk::client::CommandLineOptions>(command_line_options_))));
+    setupCollector();
+  }
+};
+
+TEST_F(FortioOutputCollectorTest, MissingGlobalResult) {
+  nighthawk::client::Output output_proto = collector_->toProto();
+  output_proto.clear_results();
+
+  FortioOutputFormatterImpl formatter;
+  ASSERT_THROW(formatter.formatProto(output_proto), NighthawkException);
+}
+
+TEST_F(FortioOutputCollectorTest, MissingCounter) {
+  nighthawk::client::Output output_proto = collector_->toProto();
+  output_proto.mutable_results(2)->clear_counters();
+
+  FortioOutputFormatterImpl formatter;
+  ASSERT_THROW(formatter.formatProto(output_proto), NighthawkException);
+}
+
+TEST_F(FortioOutputCollectorTest, MissingStatistic) {
+  nighthawk::client::Output output_proto = collector_->toProto();
+  output_proto.mutable_results(2)->clear_statistics();
+
+  FortioOutputFormatterImpl formatter;
+  ASSERT_THROW(formatter.formatProto(output_proto), NighthawkException);
+}
+
+TEST_F(FortioOutputCollectorTest, NoExceptions) {
+  nighthawk::client::Output output_proto = collector_->toProto();
+
+  FortioOutputFormatterImpl formatter;
+  ASSERT_NO_THROW(formatter.formatProto(output_proto));
+}
+
+class MediumOutputCollectorTest : public OutputCollectorTest {
+public:
+  nighthawk::client::Output loadProtoFromFile(absl::string_view path) {
+    nighthawk::client::Output proto;
+    const auto contents = Envoy::Filesystem::fileSystemForTest().fileReadToEnd(
+        TestEnvironment::runfilesPath(std::string(path)));
+    Envoy::MessageUtil::loadFromJson(contents, proto,
+                                     Envoy::ProtobufMessage::getStrictValidationVisitor());
+    return proto;
+  }
+};
+
+TEST_F(MediumOutputCollectorTest, FortioFormatter) {
+  const auto input_proto = loadProtoFromFile("test/test_data/output_formatter.medium.proto.gold");
+
+  FortioOutputFormatterImpl formatter;
+  expectEqualToGoldFile(formatter.formatProto(input_proto),
+                        "test/test_data/output_formatter.medium.fortio.gold");
 }
 
 class StatidToNameTest : public Test {};
diff --git a/test/test_data/output_formatter.medium.fortio.gold b/test/test_data/output_formatter.medium.fortio.gold
new file mode 100644
index 000000000..9d96dfdf3
--- /dev/null
+++ b/test/test_data/output_formatter.medium.fortio.gold
@@ -0,0 +1,204 @@
+{
+ "Labels": "",
+ "RequestedQPS": 1,
+ "ActualQPS": 12,
+ "ActualDuration": 5,
+ "NumThreads": 1,
+ "DurationHistogram": {
+  "Count": "48",
+  "Data": [
+   {
+    "Start": 0.055568383,
+    "End": 0.055568383,
+    "Percent": 0,
+    "Count": "1"
+   },
+   {
+    "Start": 0.055568383,
+    "End": 0.056922111,
+    "Percent": 10,
+    "Count": "4"
+   },
+   {
+    "Start": 0.056922111,
+    "End": 0.057884671,
+    "Percent": 20,
+    "Count": "5"
+   },
+   {
+    "Start": 0.057884671,
+    "End": 0.059041791,
+    "Percent": 30,
+    "Count": "5"
+   },
+   {
+    "Start": 0.059041791,
+    "End": 0.060086271,
+    "Percent": 40,
+    "Count": "5"
+   },
+   {
+    "Start": 0.060086271,
+    "End": 0.060903423,
+    "Percent": 50,
+    "Count": "4"
+   },
+   {
+    "Start": 0.060903423,
+    "End": 0.061583359,
+    "Percent": 55.000000000000007,
+    "Count": "3"
+   },
+   {
+    "Start": 0.061583359,
+    "End": 0.061976575,
+    "Percent": 60,
+    "Count": "2"
+   },
+   {
+    "Start": 0.061976575,
+    "End": 0.063830015,
+    "Percent": 65,
+    "Count": "3"
+   },
+   {
+    "Start": 0.063830015,
+    "End": 0.064684031,
+    "Percent": 70,
+    "Count": "2"
+   },
+   {
+    "Start": 0.064684031,
+    "End": 0.065679359,
+    "Percent": 75,
+    "Count": "2"
+   },
+   {
+    "Start": 0.065679359,
+    "End": 0.066537471,
+    "Percent": 77.5,
+    "Count": "2"
+   },
+   {
+    "Start": 0.066537471,
+    "End": 0.066994175,
+    "Percent": 80,
+    "Count": "1"
+   },
+   {
+    "Start": 0.066994175,
+    "End": 0.067194879,
+    "Percent": 82.5,
+    "Count": "1"
+   },
+   {
+    "Start": 0.067194879,
+    "End": 0.067563519,
+    "Percent": 85,
+    "Count": "1"
+   },
+   {
+    "Start": 0.067563519,
+    "End": 0.067862527,
+    "Percent": 87.5,
+    "Count": "1"
+   },
+   {
+    "Start": 0.067862527,
+    "End": 0.068161535,
+    "Percent": 88.75,
+    "Count": "1"
+   },
+   {
+    "Start": 0.068161535,
+    "End": 0.068657151,
+    "Percent": 90,
+    "Count": "1"
+   },
+   {
+    "Start": 0.068657151,
+    "End": 0.068657151,
+    "Percent": 91.25,
+    "Count": "0"
+   },
+   {
+    "Start": 0.068657151,
+    "End": 0.069509119,
+    "Percent": 92.5,
+    "Count": "1"
+   },
+   {
+    "Start": 0.069509119,
+    "End": 0.069509119,
+    "Percent": 93.75,
+    "Count": "0"
+   },
+   {
+    "Start": 0.069509119,
+    "End": 0.073601023,
+    "Percent": 94.375,
+    "Count": "1"
+   },
+   {
+    "Start": 0.073601023,
+    "End": 0.073601023,
+    "Percent": 95,
+    "Count": "0"
+   },
+   {
+    "Start": 0.073601023,
+    "End": 0.073601023,
+    "Percent": 95.625,
+    "Count": "0"
+   },
+   {
+    "Start": 0.073601023,
+    "End": 0.079327231,
+    "Percent": 96.25,
+    "Count": "1"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.079327231,
+    "Percent": 96.875,
+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.079327231,
+    "Percent": 97.1875,
+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.079327231,
+    "Percent": 97.5,
+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.079327231,
+    "Percent": 97.8125,
+    "Count": "0"
+   },
+   {
+    "Start": 0.079327231,
+    "End": 0.084357119,
+    "Percent": 98.125,
+    "Count": "1"
+   },
+   {
+    "Start": 0.084357119,
+    "End": 0.084357119,
+    "Percent": 100,
+    "Count": "0"
+   }
+  ]
+ },
+ "RetCodes": {
+  "200": "60"
+ },
+ "URL": "http://127.0.0.1:10000/",
+ "StartTime": "2019-10-16T00:30:12Z",
+ "RequestedDuration": "5s"
+}
diff --git a/test/test_data/output_formatter.medium.proto.gold b/test/test_data/output_formatter.medium.proto.gold
new file mode 100644
index 000000000..942f46aa3
--- /dev/null
+++ b/test/test_data/output_formatter.medium.proto.gold
@@ -0,0 +1,3522 @@
+{
+ "options": {
+  "verbosity": {
+   "value": "INFO"
+  },
+  "output_format": {
+   "value": "JSON"
+  },
+  "address_family": {
+   "value": "AUTO"
+  },
+  "request_options": {
+   "request_method": "GET",
+   "request_headers": [],
+   "request_body_size": 0
+  },
+  "tls_context": {
+   "sni": "",
+   "allow_renegotiation": false
+  },
+  "sequencer_idle_strategy": {
+   "value": "SPIN"
+  },
+  "requests_per_second": 1,
+  "connections": 1,
+  "duration": "5s",
+  "timeout": "30s",
+  "h2": false,
+  "concurrency": "auto",
+  "prefetch_connections": false,
+  "burst_size": 0,
+  "max_pending_requests": 1,
+  "max_active_requests": 4294937295,
+  "max_requests_per_connection": 4294937295,
+  "uri": "http://127.0.0.1:10000/",
+  "trace": ""
+ },
+ "results": [
+  {
+   "name": "worker_0",
+   "statistics": [
+    {
+     "count": "4",
+     "id": "benchmark_http_client.queue_to_connect",
+     "percentiles": [
+      {
+       "percentile": 0,
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+     "name": "upstream_cx_total",
+     "value": "12"
+    },
+    {
+     "name": "upstream_cx_tx_bytes_total",
+     "value": "3600"
+    },
+    {
+     "name": "upstream_rq_pending_total",
+     "value": "12"
+    },
+    {
+     "name": "upstream_rq_total",
+     "value": "60"
+    }
+   ]
+  }
+ ],
+ "timestamp": "2019-10-16T00:30:12.911078318Z"
+}