Johannesburg is about 20 times bigger than The Hague (Den Haag).

The Hague (Den Haag) (excluding the city's 15.68 sq km of water area) is approximately 82 sq km, while Johannesburg is approximately 1,644 sq km, making Johannesburg 1,894% larger than The Hague (Den Haag).
Tip: This to-scale comparison of The Hague (Den Haag) vs. Johannesburg uses the Mercator projection, which distorts the size of regions near the poles.
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