In the U.S., the convention set by the national chains are small (10"), medium (12"), and large (14"), with some having extra large (16") as an option. Most local places will follow that convention as well.
The amount I consume usually comes down to the crust. If you give me a 16" thin crust pizza it would be gone. But a 14" normal crust, I’d likely eat half of one and try not to eat more.
In the U.S., the convention set by the national chains are small (10"), medium (12"), and large (14"), with some having extra large (16") as an option. Most local places will follow that convention as well.
The amount I consume usually comes down to the crust. If you give me a 16" thin crust pizza it would be gone. But a 14" normal crust, I’d likely eat half of one and try not to eat more.
Key word was try.