Scale Calculator

Convert a full-size length to a model measurement, or a model measurement back to full size. For example, at 1/24 scale, 16 feet becomes 8 inches: 16 × 12 ÷ 24 = 8.

RC scale

One scale, two independent conversions. Use either direction below.

Full size → model

Full-size length, in feet

Model measurement

203.2 mm

Model → full size

Model length, in inches

Full-size equivalent

16 ft

Inch results are rounded to the nearest 1/32 inch; millimeters to the nearest 0.1 mm.

These are length conversions, not recommended lane widths. The reference car occupies about 16 feet at its widest sideways angle, but a drivable lane needs extra clearance. See Scale & Units for lane-width guidance, or Build & Printing to print a circuit at true scale.