Indianapolis is about 2.7 times bigger than Philadelphia.

Philadelphia is approximately 348 sq km, while Indianapolis is approximately 935 sq km, making Indianapolis 169% larger than Philadelphia.
Tip: This to-scale comparison of Philadelphia vs. Indianapolis 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.