Hartford is about 2.3 times smaller than Paris.

Paris is approximately 105 sq km, while Hartford is approximately 45 sq km, making Hartford 42.71% the size of Paris.
Tip: This to-scale comparison of Paris 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.