Wellington is about 3.1 times smaller than Delhi.

Delhi is approximately 1,397 sq km, while Wellington (map shows its 57 named neighbourhoods; the area covers the whole city) is approximately 444 sq km, making Wellington 31.78% the size of Delhi.
Tip: This to-scale comparison of Delhi vs. Wellington uses the Mercator projection, which distorts the size of regions near the poles.
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