Baltimore is about 3.2 times smaller than Jakarta.

Jakarta is approximately 662 sq km, while Baltimore is approximately 210 sq km, making Baltimore 31.67% the size of Jakarta.
Tip: This to-scale comparison of Jakarta vs. Baltimore 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.