All scales
A dedicated page for every common scale ratio — with a preset calculator, a quick conversion table, applications and worked examples. Pick the scale you need.
Model scales
Architectural scales
1:20
1:50
1:100
1:200
1:500
Map scales
1:25 000
1:50 000
1:100 000
1:500 000
We are adding dedicated pages step by step. Scales not yet linked use the same calculator on the home page — click any chip there to preset it.
Cannot find the right ratio?
The main scale calculator handles any custom ratio in any unit. Set both numbers yourself, lock the scale and convert lengths in any direction.