Denver is about 2.4 times bigger than Amsterdam.

Amsterdam is approximately 166 sq km, while Denver is approximately 396 sq km, making Denver 139% larger than Amsterdam.
Tip: This to-scale comparison of Amsterdam vs. Denver uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.