South Africa is about 3,393 times bigger than Detroit.

Detroit is approximately 359 sq km, while South Africa is approximately 1,219,090 sq km, making South Africa 339,186% larger than Detroit.
Tip: This to-scale comparison of Detroit vs. South Africa 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.