diff --git a/len.go b/len.go
index 3e8f34b..e1e68e1 100644
--- a/len.go
+++ b/len.go
@@ -1,6 +1,30 @@
 package utf8s
 
 // Len returns the number of bytes in a UTF-8 encoding of this Unicode code point.
+//
+// Example
+//
+//	length := utf8s.Len('A')
+//
+//	// length == 1
+//
+// Example
+//
+//	length := utf8s.Len('r')
+//
+//	// length == 1
+//
+// Example
+//
+//	length := utf8s.Len('¡')
+//
+//	// length == 2
+//
+// Example
+//
+//	length := utf8s.Len('۵')
+//
+//	// length == 2
 func Len(r rune) int {
 
 	switch {