Convert Inch to Metre

Quick answer: Inch to Metre

1 Inch = 0.0254 Metre (in → m). To convert inch to metre, multiply by 0.0254. To convert metre to inch, multiply by 39.37008. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common inch-to-metre questions.

How to convert Inch to Metre

To convert inch to metre, multiply the number of inch by the conversion factor 0.0254, because 1 in = 0.0254 m. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 m = 39.37008 in, so you divide by 0.0254 (or multiply by 39.37008) to turn metre back into inch.

m = in × 0.0254  ·  in = m × 39.37008

1. Write down the value you want to convert, in inch.
2. Multiply it by 0.0254.
3. The result is the same area/length/quantity expressed in metre.

Inch to Metre — worked examples

Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 inch is 0.127 metre because 5 in × 0.0254 = 0.127 m.

Common Inch to Metre conversions

These are the inch-to-metre values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:

• 1 inch = 0.0254 metre
• 2 inch = 0.0508 metre
• 2.5 inch = 0.0635 metre
• 3 inch = 0.0762 metre
• 4 inch = 0.1016 metre
• 5 inch = 0.127 metre
• 6 inch = 0.1524 metre
• 7 inch = 0.1778 metre
• 8 inch = 0.2032 metre
• 9 inch = 0.2286 metre
• 10 inch = 0.254 metre
• 12 inch = 0.3048 metre
• 15 inch = 0.381 metre
• 20 inch = 0.508 metre
• 25 inch = 0.635 metre
• 30 inch = 0.762 metre
• 50 inch = 1.27 metre
• 75 inch = 1.905 metre
• 100 inch = 2.54 metre
• 200 inch = 5.08 metre
• 500 inch = 12.7 metre
• 1000 inch = 25.4 metre

Inch to Metre conversion chart (both directions)

The chart below converts inch to metre and metre to inch side by side, so it works whichever way you need. 1 inch = 0.0254 metre, and 1 metre = 39.37008 inch.

Inch vs Metre: which is bigger?

A metre is the larger unit: one metre equals 39.37008 inchs. Put another way, you need 39.37008 inchs to make a single metre.

What is a Inch? History, origin and usage

The inch takes its name from the Latin uncia, 'a twelfth part', because it was one-twelfth of a Roman foot, the same root that gave English the word 'ounce'. It was also understood as the width of a man's thumb, and one medieval English rule averaged the thumb-breadths of three different men.

The inch is used in the US, UK and Canada for screen sizes, paper, body measurements and countless engineering contexts. Since 1959 it is defined as exactly 2.54 centimetres.

An old English statute defined the inch as three barleycorns laid end to end, a standard that even shaped shoe sizing. Screen, tyre and wheel sizes are still quoted in inches almost everywhere in the world.

What is a Metre? History, origin and usage

The metre was conceived during the French Revolution: in 1791 the French Academy of Sciences defined it as one ten-millionth of the distance from the North Pole to the Equator along the meridian through Paris. Its name comes from the Greek metron, 'a measure'. It was later embodied in a platinum bar (1799), and in 1960 redefined using the wavelength of krypton-86 light.

The metre is the SI base unit of length and the foundation of the entire metric system used by science and most of the world. Every other unit in this category is defined as a multiple or fraction of it.

Since 1983 the metre has been defined by fixing the speed of light: it is the distance light travels in a vacuum in 1/299,792,458 of a second. This means the metre is no longer tied to any physical artefact and can be reproduced anywhere in the universe.

Convert 1 Inch to other units

It can help to see a inch next to the other units it is commonly compared with. One inch (in) is equal to:

Convert 1 Metre to other units

One metre (m) is equal to:

Tips for converting Inch to Metre

• To go from inch to metre, multiply by 0.0254; to go back, divide by 0.0254 (or multiply by 39.37008).
• For a quick mental estimate, remember that 1 inch ≈ 0.0254 metre, so 10 inch ≈ 0.254 metre.
• The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
• Both fields update live as you type — change either side to convert in that direction.

How to use this Inch to Metre converter

Type a number into the Inch field and the equivalent in Metre appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Metre field to convert the other way (metre to inch). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.

Accuracy and method

Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 in = 0.0254 m), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for inch-to-metre conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.

Sources

• NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary units. The inch, foot, yard and mile are defined exactly in metres by the 1959 international yard-and-pound agreement, so every imperial figure on this page is exact, not rounded.
• BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.

The metric units (km, m, cm, mm, µm) are exact by definition, and the imperial units (mile, yard, foot, inch, nautical mile) use their exact international values. Traditional units (hand, span, finger, cubit, rod/pole, link, rope, ken, league) are given at their commonly accepted standard sizes — historical local values sometimes differed, so confirm against a primary source before relying on them for legal or historical work.

Frequently asked questions

How many metre are in 1 inch?

1 inch = 0.0254 metre (m). To convert any number of inch to metre, multiply by 0.0254.

How do I convert inch to metre?

Multiply the number of inch by 0.0254. For example, 10 inch = 10 × 0.0254 = 0.254 metre, and 25 inch = 0.635 metre.

How many inch are in 1 metre?

1 metre = 39.37008 inch. So to convert metre back to inch, multiply by 39.37008.

What is the formula to convert inch to metre?

metre = inch × 0.0254. The reverse formula is inch = metre × 39.37008.

How much is 100 inch in metre?

100 inch = 2.54 metre. (And 1000 inch = 25.4 metre.)

Which is bigger, a inch or a metre?

A metre is larger: 1 metre = 39.37008 inch.

Is this inch to metre converter accurate?

Yes — every value is computed from the exact 0.0254 m per in factor (not rounded look-up tables), and the factors are re-verified automatically on every update.

Can I convert metre to inch too?

Yes. The converter works both ways — enter a value in either field. 1 metre = 39.37008 inch.

Related length conversions

• Metre to Inch
• Kilometre to Metre
• Hand to Inch
• Metre to Cubit
• Metre to Span
• Inch to Foot
• Point to Inch
• Metre to Ken
• Metre to Rope
• Metre to Kilometre

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