diff --git a/scimath/units/electromagnetism.py b/scimath/units/electromagnetism.py
index 4cc1913..318301e 100644
--- a/scimath/units/electromagnetism.py
+++ b/scimath/units/electromagnetism.py
@@ -57,8 +57,8 @@
 ###############################################################################
 
 micro_farad = micro * farad
-micro_farad.label = 'uf'
-mf = micro_farad
+micro_farad.label = 'µf'
+µf = uf = micro_farad
 
 pico_farad = pico * farad
 pico_farad.label = 'pf'
diff --git a/scimath/units/geo_units.py b/scimath/units/geo_units.py
index f80755d..e55a04f 100644
--- a/scimath/units/geo_units.py
+++ b/scimath/units/geo_units.py
@@ -93,5 +93,5 @@
 ###############################################################################
 # psonic
 ###############################################################################
-us_per_ft = microsecond / foot
-us_per_ft.label = 'us/ft'
+µs_per_ft = us_per_ft = microsecond / foot
+µs_per_ft.label = 'µs/ft'
diff --git a/scimath/units/length.py b/scimath/units/length.py
index 3ec74b0..5aed34e 100644
--- a/scimath/units/length.py
+++ b/scimath/units/length.py
@@ -71,7 +71,7 @@
 
 m = meter
 nm = nanometer
-um = micrometer
+µm = um = micrometer
 micron = micrometer
 mm = millimeter
 cm = centimeter
diff --git a/scimath/units/tests/test_units.py b/scimath/units/tests/test_units.py
index 7f26cd7..c313dd6 100644
--- a/scimath/units/tests/test_units.py
+++ b/scimath/units/tests/test_units.py
@@ -256,12 +256,18 @@ def test_unit_parser_non_python(self):
             angle.grad,
             angle.minutes,
             acceleration.m_per_s2,
-            electromagnetism.mf,
+            electromagnetism.uf,
             volume.cm3,
         ]
         for u in odd_units:
             self.assertEqual(parse(u.label), u)
 
+    def test_unit_parser_micro_sign(self):
+        parse = lambda s: unit_parser.parse_unit(s, suppress_unknown=False)
+        micrometer_symbols = ["\N{MICRO SIGN}m", "\N{GREEK SMALL LETTER MU}m"]
+        for symbol in micrometer_symbols:
+            self.assertEqual(parse(symbol), length.µm)
+
     def test_unit_parser_offsets(self):
         parse = lambda s: unit_parser.parse_unit(s, suppress_unknown=False)
         offset_units = [
diff --git a/scimath/units/time.py b/scimath/units/time.py
index e53dddd..d94cd75 100644
--- a/scimath/units/time.py
+++ b/scimath/units/time.py
@@ -59,7 +59,7 @@
 s = sec = second
 ps = picosecond
 ns = nanosecond
-us = usec = microsecond
+µs = µsec = us = usec = microsecond
 ms = msec = millisecond
 
 # plural aliases