Auckland is about 31 times bigger than Washington.

Washington is approximately 158 sq km, while Auckland is approximately 4,894 sq km, making Auckland 2,991% larger than Washington.
Tip: This to-scale comparison of Washington vs. Auckland 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.