1:12 Scale Calculator & Conversion Chart
One-inch scale · 8.33% of real size
1:12 is the classic "one inch to one foot" scale, shared by high-end action figures, dollhouses, and large motorcycle kits. Its size makes it the most forgiving scale for scratch-building interior details — a real 3 mm screw head is a visible 0.25 mm dome, not an invisible speck.
Precision Scale Conversion Calculator
1:12 Scale Quick Facts
- 1 real foot = 1″ (25.4 mm) on the model
- 1 real meter = 83.33 mm on the model
- A 6 ft (183 cm) person = 152.4 mm (6″) tall
- Model is 8.33% of real size — use this as the scale percentage in 3D-print slicers
1:12 Scale Reference Chart
| Real Size | mm | cm | inches |
|---|---|---|---|
| 1 inch | 2.1 mm | 0.212 cm | 0.083″ |
| 1 foot | 25.4 mm | 2.54 cm | 1″ |
| 6 ft (person) | 152.4 mm | 15.24 cm | 6″ |
| 1 meter | 83.3 mm | 8.33 cm | 3.281″ |
| 3 m (room height) | 250 mm | 25 cm | 9.843″ |
| 10 meters | 833.3 mm | 83.33 cm | 32.808″ |
| 30 m (building) | 2500 mm | 250 cm | 98.425″ |
Frequently Asked Questions
What is 1:12 scale in mm, cm, and inches?
In 1:12 Scale, 1 unit on the model equals 12 of the same unit in real life. One real foot equals 1 inches (25.4 mm) on the model, one real meter equals 83.33 mm (8.33 cm), and the model is 8.33% of real size.
How tall is a 6 ft person in 1:12 Scale?
A 6-foot (183 cm) person stands 152.4 mm (6 inches) tall in 1:12 Scale.
How do I convert a real measurement to 1:12 Scale?
Divide the real measurement by 12. For example, a 10 m object is 833.3 mm long in 1:12 Scale. The calculator on this page does this automatically in both directions.