Feet to Inches & Millimeters – Quick Conversion
Feet expand to inches (×12) and to millimeters (×304.8). Millimeters give fine resolution for engineering and fabrication.
Formulas
- in = ft × 12
- mm = ft × 304.8
- ft = in ÷ 12 = mm ÷ 304.8
Quick Values
1 ft = 12 in = 304.8 mm · 5 ft = 60 in = 1524 mm · 6 ft = 72 in = 1828.8 mm.
Example (7 ft)
- Inches = 7 × 12 = 84
- Millimeters = 7 × 304.8 = 2133.6
- Result: 7 ft = 84 in = 2133.6 mm
Uses
- Timber & tubing specs
- 3D printing / CNC scaling
- Fixture clearances
Accuracy & Tips
- Keep mm as whole/one decimal when possible
- Mental: ft × 300 then add ft × 4.8
- Round inches only after final mm conversion if needed
More Examples
| Feet | Inches | Millimeters |
|---|
| 2 | 24 | 609.6 |
| 5 | 60 | 1524 |
| 6 | 72 | 1828.8 |
FAQ
- Exact mm per foot? 304.8 mm.
- Why not round to 305? Only for rough estimations.
- Convert 9 ft to mm? 9 × 304.8 = 2743.2 mm.