ArchSupply Utilities

Inch to Meter Converter

Instant, two-way conversion across common engineering units.

Free

1 in = 0.0254 m(Inch → Metre)

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Converting inches to meters

To convert inches to meters, multiply the value by 0.0254. Length values feed directly into setting out, spans and drawing dimensions, so the converter keeps full decimal precision in both directions.

Visual scale

To scale
1 inch = 0.0254 meters.
1 meter = 39.370079 inches.

Inch (in)

The inch (in) is the base small unit of the imperial and US customary length system.

Origin
Historically derived from thumb and barleycorn measures, it has been defined internationally since 1959 as exactly 25.4 mm.
Where it is used
Standard on US and UK drawings, pipe and fastener sizes, screen dimensions and imported product data.
Relation to SI
1 in = 0.0254 m exactly, by international agreement.

Meter (m)

The meter (m) is the SI base unit of length and the international standard used worldwide.

Origin
Originally defined as one ten-millionth of the distance from the equator to the North Pole, it is now defined by the distance light travels in vacuum in 1/299,792,458 of a second.
Where it is used
Used for building grids, floor levels, spans, site dimensions and virtually all scientific and engineering work.
Relation to SI
The meter is the SI base unit; every other length unit here is defined from it.

Frequently asked questions

How many meters are in one inch?

1 in equals 0.0254 m.

How do I convert inches to meters?

Multiply the value by 0.0254. For example, 10 in equals 0.254 m.

How do I convert back from meters to inches?

1 m equals 39.370079 in. The converter above works in both directions, so you can type into either field.

Should I work in millimeters or meters on drawings?

Most architectural and structural drawings outside the US are dimensioned in millimeters to avoid decimal points, while site levels, grids and areas are stated in meters.

Are the imperial values here exact?

Yes. The inch has been defined as exactly 25.4 mm since 1959, so foot, yard and mile conversions are exact rather than rounded.

Is this length converter free to use?

Yes. Every unit conversion runs in your browser, needs no account and is free for professional use.

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