diff --git a/README.md b/README.md
index 5010f77..71f9189 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,8 @@ go get github.com/xhit/go-str2duration
 
 Go String To Duration supports this strings conversions to duration:
 - All strings returned in time.Duration String.
-- A string more readable like 1w2d6h3ns (1 week 2 days 6 hours and 3 nanoseconds)
+- A string more readable like 1w2d6h3ns (1 week 2 days 6 hours and 3 nanoseconds).
+- `µs` and `us` are microsecond.
 
 **Note**: a day is 24 hour.
 
@@ -58,6 +59,7 @@ func main() {
             {"1s", time.Duration(time.Second)},
             {"1ms", time.Duration(time.Millisecond)},
             {"1µs", time.Duration(time.Microsecond)},
+            {"1us", time.Duration(time.Microsecond)},
             {"1ns", time.Duration(time.Nanosecond)},
             {"4.000000001s", time.Duration(4*time.Second + time.Nanosecond)},
             {"1h0m4.000000001s", time.Duration(time.Hour + 4*time.Second + time.Nanosecond)},
@@ -80,6 +82,8 @@ func main() {
             //And can be case insensitive
             {"2D3S96NS", time.Duration(48*time.Hour + 3*time.Second + 96*time.Nanosecond)},
 
+            {"10s1us693ns", time.Duration(10*time.Second + time.Microsecond + 693*time.Nanosecond)},
+
         } {
             durationFromString, err := str2duration.Str2Duration(tt.dur)
             if err != nil {
diff --git a/str2duration.go b/str2duration.go
index 8c013ff..96cbcb1 100644
--- a/str2duration.go
+++ b/str2duration.go
@@ -25,7 +25,7 @@ var reDuration *regexp.Regexp
 
 func init() {
 	reTimeDecimal = regexp.MustCompile(`(?i)(\d+)(?:(?:\.)(\d+))?((?:[mµn])?s)$`)
-	reDuration = regexp.MustCompile(`(?i)^(?:(\d+)(?:w))?(?:(\d+)(?:d))?(?:(\d+)(?:h))?(?:(\d{1,2})(?:m))?(?:(\d+)(?:s))?(?:(\d+)(?:ms))?(?:(\d+)(?:µs))?(?:(\d+)(?:ns))?$`)
+	reDuration = regexp.MustCompile(`(?i)^(?:(\d+)(?:w))?(?:(\d+)(?:d))?(?:(\d+)(?:h))?(?:(\d{1,2})(?:m))?(?:(\d+)(?:s))?(?:(\d+)(?:ms))?(?:(\d+)(?:(?:µ|u)s))?(?:(\d+)(?:ns))?$`)
 }
 
 //Str2Duration returns time.Duration from string input
@@ -132,7 +132,7 @@ func decimalTimeToNano(str string) (string, error) {
 	case "ms":
 		nanoSeconds = 1000000
 		dotTimeDecimal += strings.Repeat("0", 6-len(dotTimeDecimal))
-	case "µs":
+	case "µs", "us":
 		nanoSeconds = 1000
 		dotTimeDecimal += strings.Repeat("0", 3-len(dotTimeDecimal))
 	}
diff --git a/str2duration_test.go b/str2duration_test.go
index 9fe1ae4..27665d5 100644
--- a/str2duration_test.go
+++ b/str2duration_test.go
@@ -19,6 +19,7 @@ func TestParseString(t *testing.T) {
 		{"1s", time.Duration(time.Second)},
 		{"1ms", time.Duration(time.Millisecond)},
 		{"1µs", time.Duration(time.Microsecond)},
+		{"1us", time.Duration(time.Microsecond)},
 		{"1ns", time.Duration(time.Nanosecond)},
 		{"4.000000001s", time.Duration(4*time.Second + time.Nanosecond)},
 		{"1h0m4.000000001s", time.Duration(time.Hour + 4*time.Second + time.Nanosecond)},
@@ -27,6 +28,7 @@ func TestParseString(t *testing.T) {
 		{"1.00002ms", time.Duration(time.Millisecond + 20*time.Nanosecond)},
 		{"1.00000002s", time.Duration(time.Second + 20*time.Nanosecond)},
 		{"693ns", time.Duration(693 * time.Nanosecond)},
+		{"10s1us693ns", time.Duration(10*time.Second + time.Microsecond + 693*time.Nanosecond)},
 
 		//This times aren't returned with time.Duration string, but are easily readable and can be parsed too!
 		{"1ms1ns", time.Duration(time.Millisecond + 1*time.Nanosecond)},