Fort Worth is about 1.4 times smaller than Rome.

Rome is approximately 1,287 sq km, while Fort Worth (map shows its 16 named neighbourhoods; the area covers the whole city) is approximately 911 sq km, making Fort Worth 70.8% the size of Rome.
Tip: This to-scale comparison of Rome vs. Fort Worth 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.