New Orleans is about 1.3 times smaller than Columbus.

Columbus is approximately 574 sq km, while New Orleans is approximately 439 sq km, making New Orleans 76.48% the size of Columbus.
Tip: This to-scale comparison of Columbus vs. New Orleans 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.