Washington is about 31 times smaller than Auckland.

Auckland is approximately 4,894 sq km, while Washington is approximately 158 sq km, making Washington 3.23% the size of Auckland.
Tip: This to-scale comparison of Auckland vs. Washington 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.