Charlotte is about 3.9 times bigger than Baltimore.

Baltimore is approximately 210 sq km, while Charlotte (map shows its 157 named neighbourhoods; the area covers the whole city) is approximately 807 sq km, making Charlotte 285% larger than Baltimore.
Tip: This to-scale comparison of Baltimore vs. Charlotte 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.