How to convert inches to metres
One inch equals 0.0254 metres, so multiply the number of inches by 0.0254:
m = in × 0.0254
in = m ÷ 0.0254 (1 m = 39.3701 in)
Example: 12 in → 12 × 0.0254 = 0.3048 m.
Going the other way, divide by 0.0254, or multiply by 39.3701; the metres to inches converter does it for you.
Everyday values
| Inches | Metres | For example |
|---|---|---|
| 12 in | 0.3048 m | one foot |
| 39.37 in | 0.999998 m | one metre |
| 48 in | 1.2192 m | 4 feet |
| 60 in | 1.524 m | 5 feet |
| 72 in | 1.8288 m | 6 feet |
| 100 in | 2.54 m | 100 inches |
When you need this conversion
One inch is exactly 0.0254 metres. Engineering drawings in the US often mix inches with metric parts, so converting long dimensions to metres (or millimetres) avoids errors when ordering materials.
Inch to metre conversion table
| in | m | in | m |
|---|---|---|---|
| 6 in | 0.1524 m | 78 in | 1.9812 m |
| 12 in | 0.3048 m | 84 in | 2.1336 m |
| 18 in | 0.4572 m | 90 in | 2.286 m |
| 24 in | 0.6096 m | 96 in | 2.4384 m |
| 30 in | 0.762 m | 102 in | 2.5908 m |
| 36 in | 0.9144 m | 108 in | 2.7432 m |
| 42 in | 1.0668 m | 114 in | 2.8956 m |
| 48 in | 1.2192 m | 120 in | 3.048 m |
| 54 in | 1.3716 m | 126 in | 3.2004 m |
| 60 in | 1.524 m | 132 in | 3.3528 m |
| 66 in | 1.6764 m | 138 in | 3.5052 m |
| 72 in | 1.8288 m | 144 in | 3.6576 m |
About the units
- Inch (in): exactly 2.54 centimetres (international agreement of 1959).
- Metre (m): the SI base unit of length, defined by the speed of light.
Both are units of length. The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many metres are in one inch?
One inch is 0.0254 metres. One metre is 39.3701 inches.
How do I convert inches to metres?
Multiply the value in inches by 0.0254. To go back, divide by 0.0254.
What is 12 in in metres?
12 in = 0.3048 m.
What is 39.37 in in metres?
39.37 in = 0.999998 m.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.