The Complete Model Scale Chart

Every common scale across modeling, railroading, wargaming, and architecture — sorted by hobby, with the math that matters. Click any scale for a dedicated calculator, conversion chart, and reference guide.

Plastic & Diecast Modeling

ScaleKnown as% of real size1 real foot =
1:5 ScaleLarge RC & engine scale20%2.4″ (60.96 mm)
1:10 ScaleRC car standard10%1.2″ (30.48 mm)
1:12 ScaleOne-inch scale8.33%1″ (25.4 mm)
1:18 ScalePremium diecast standard5.56%0.667″ (16.93 mm)
1:16 ScaleRC tank & tractor scale6.25%0.75″ (19.05 mm)
1:24 ScaleModel car standard4.17%0.5″ (12.7 mm)
1:25 ScaleAmerican car kit scale4%0.48″ (12.19 mm)
1:32 ScaleFarm & large aircraft scale3.13%0.375″ (9.53 mm)
1:35 ScaleMilitary armor standard2.86%0.343″ (8.71 mm)
1:43 ScaleClassic diecast / British O2.33%0.279″ (7.09 mm)
1:48 ScaleQuarter scale2.08%0.25″ (6.35 mm)
1:64 ScaleHot Wheels / S scale1.56%0.188″ (4.76 mm)
1:72 ScaleBraille scale1.39%0.167″ (4.23 mm)
1:144 ScaleAirliner & Gunpla scale0.69%0.083″ (2.12 mm)
1:200 ScaleDesktop airliner scale0.5%0.06″ (1.52 mm)
1:350 ScaleLarge warship scale0.286%0.034″ (0.87 mm)
1:700 ScaleWaterline fleet scale0.143%0.017″ (0.44 mm)

Model Railroading

ScaleKnown as% of real size1 real foot =
G Scale (1:22.5)Garden railway scale4.44%0.533″ (13.55 mm)
O Scale (1:48)Traditional Lionel size2.08%0.25″ (6.35 mm)
OO Scale (1:76)UK railway standard1.32%0.158″ (4.01 mm)
HO Scale (1:87)Most popular worldwide1.15%0.138″ (3.5 mm)
TT Scale (1:120)Table Top scale0.83%0.1″ (2.54 mm)
N Scale (1:160)Compact layout scale0.63%0.075″ (1.91 mm)
Z Scale (1:220)Briefcase layout scale0.455%0.055″ (1.39 mm)

Tabletop & Wargaming

ScaleKnown as% of real size1 real foot =
28mm (1:56)Standard wargaming size1.79%0.214″ (5.44 mm)
32mm (~1:48)Modern miniature size2.08%0.25″ (6.35 mm)
15mm (1:100)Mass-battle scale1%0.12″ (3.05 mm)
6mm (1:285)Micro armor0.351%0.042″ (1.07 mm)
1:300 ScaleMicro armor & site plans0.333%0.04″ (1.02 mm)

Architecture & Engineering

ScaleKnown as% of real size1 real foot =
1:20 ScaleInterior detail scale5%0.6″ (15.24 mm)
1:50 ScaleFloor plan standard2%0.24″ (6.1 mm)
1:100 ScaleBuilding model standard1%0.12″ (3.05 mm)
1:500 ScaleUrban planning scale0.2%0.024″ (0.61 mm)
1:1000 ScaleMaster plan & harbor scale0.1%0.012″ (0.3 mm)

Popular Scale-to-Scale Conversions

1:72 Scale to 1:48 Scale · 1:48 Scale to 1:72 Scale · 1:72 Scale to 1:35 Scale · 1:35 Scale to 1:72 Scale · 1:48 Scale to 1:35 Scale · 1:35 Scale to 1:48 Scale · 1:144 Scale to 1:72 Scale · 1:72 Scale to 1:144 Scale · 1:24 Scale to 1:18 Scale · 1:18 Scale to 1:24 Scale · HO Scale to N Scale · N Scale to HO Scale · HO Scale to OO Scale · OO Scale to HO Scale · HO Scale to O Scale · O Scale to HO Scale · 28mm to 1:72 Scale · 1:72 Scale to 28mm · 15mm to 28mm · 28mm to 15mm · 1:50 Scale to 1:100 Scale · 1:100 Scale to 1:50 Scale

Need a Custom Ratio?

The main calculator accepts any scale — type the ratio directly, mix metric and imperial units, and enter fractions the way they appear on plans.