Stockholm is about 3 times smaller than Toronto.

Toronto is approximately 630 sq km, while Stockholm (map shows its 47 named neighbourhoods; the area covers the whole city) is approximately 207 sq km, making Stockholm 32.92% the size of Toronto.
Tip: This to-scale comparison of Toronto vs. Stockholm 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.