Prince Edward Island is about 2.4 times bigger than Australian Capital Territory.

Australian Capital Territory is approximately 2,358 km² (910 sq mi), while Prince Edward Island is approximately 5,620 km² (2,170 sq mi), making Prince Edward Island 138% larger than Australian Capital Territory.
Tip: This to-scale comparison of Australian Capital Territory vs. Prince Edward Island uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Prince Edward Island vs. Australian Capital Territory

Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.