Meters to Inches Converter

About the m to in calculation

One meter is exactly 39.3701 inches, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The SI base unit of length, defined by the distance light travels in 1/299,792,458 of a second. Still standard for screen sizes, pipe diameters and tyre rims worldwide.

Formula

in = m × 39.3701

1 m = 39.3701 in
1 in = 0.0254 m

Worked example

To convert 100 m, multiply by 39.3701: 100 × 39.3701 = 3,937.01 in.

Frequently asked questions

How many inches are in a meter?

There are 39.3701 inches in one meter. To convert any amount, multiply the number of meters by 39.3701.

How do I convert inches back to meters?

Divide instead of multiplying, or equivalently multiply by 0.0254. One inch is 0.0254 meters.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between meters and inches is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Meters: the SI base unit of length, defined by the distance light travels in 1/299,792,458 of a second. Inches: still standard for screen sizes, pipe diameters and tyre rims worldwide.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units