diff --git a/ports/esp32/modules/neopixel.py b/ports/esp32/modules/neopixel.py
index aa0de8112b..f5c9193988 100644
--- a/ports/esp32/modules/neopixel.py
+++ b/ports/esp32/modules/neopixel.py
@@ -15,6 +15,9 @@ class NeoPixel:
         self.pin.init(pin.OUT)
         self.timing = timing
 
+    def __len__(self):
+        return self.n
+
     def __setitem__(self, index, val):
         offset = index * self.bpp
         for i in range(self.bpp):
diff --git a/ports/esp8266/modules/neopixel.py b/ports/esp8266/modules/neopixel.py
index 501a2689e7..9dc153372f 100644
--- a/ports/esp8266/modules/neopixel.py
+++ b/ports/esp8266/modules/neopixel.py
@@ -15,6 +15,9 @@ class NeoPixel:
         self.pin.init(pin.OUT)
         self.timing = timing
 
+    def __len__(self):
+        return self.n
+
     def __setitem__(self, index, val):
         offset = index * self.bpp
         for i in range(self.bpp):