Amsterdam is about 2.5 times bigger than Syracuse.

Syracuse is approximately 65 sq km, while Amsterdam is approximately 166 sq km, making Amsterdam 155% larger than Syracuse.
Tip: This to-scale comparison of Syracuse vs. Amsterdam 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.