Canberra is about 18 times smaller than Timor-Leste.

Timor-Leste is approximately 14,874 sq km, while Canberra is approximately 814 sq km, making Canberra 5.47% the size of Timor-Leste.
Tip: This to-scale comparison of Timor-Leste vs. Canberra uses the Mercator projection, which distorts the size of regions near the poles.