Toronto is about 1.7 times bigger than Mesa.

Mesa (map shows its 6 named neighbourhoods; the area covers the whole city) is approximately 367 sq km, while Toronto is approximately 630 sq km, making Toronto 72% larger than Mesa.
Tip: This to-scale comparison of Mesa vs. Toronto 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.