ScaleCalculator

All scale calculators

Pick a scale to convert real-world sizes to model size — and back — instantly.

Calculators & tools

ConverterScale Calculatorany scale, 50+ presets FactorScale Factor Calculatorratio from two sizes ChartConversion Chartprintable multiplier table RulerScale Ruleron-screen, calibrated ArchArchitectural Scalearchitect & engineer 3D3D Print Scaleslicer %, wargaming mm MapMap Scalemap → real distance

Model kits

1:72 1:72 scale Model kits 1:48 1:48 scale aka quarter scale 1:35 1:35 scale Model kits 1:32 1:32 scale Model kits 1:12 1:12 scale aka one inch = one foot 1:144 1:144 scale Model kits

Diecast

1:24 1:24 scale Diecast 1:18 1:18 scale Diecast 1:64 1:64 scale Diecast 1:43 1:43 scale Diecast

Model railroad

1:87.1 HO scale aka 1:87 1:160 N scale Model railroad 1:48 O scale aka 1:48 (US) 1:220 Z scale Model railroad 1:22.5 G scale Model railroad 1:64 S scale aka 1:64 1:120 TT scale Model railroad 1:76.2 OO scale aka 1:76

Architecture

1:50 1:50 scale Architecture 1:100 1:100 scale Architecture 1:200 1:200 scale Architecture 1:20 1:20 scale Architecture 1:25 1:25 scale Architecture 1:500 1:500 scale Architecture 1:1000 1:1000 scale Architecture

Need a different scale?

The main scale calculator supports any custom ratio — just type it in. You can also try the map scale calculator for converting map distances to real-world distances.