Hartford is about 3.7 times smaller than Amsterdam.

Amsterdam is approximately 166 sq km, while Hartford is approximately 45 sq km, making Hartford 27.16% the size of Amsterdam.
Tip: This to-scale comparison of Amsterdam vs. Hartford 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.