Convert Meter to Inch
Convert meters to inches instantly. 1 meter = 39.3700787402 inch — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Inch to Meter converter for the reverse conversion.
Units explained
Meter
The meter is the SI base unit of length. Since 2019, the meter has been defined by fixing the numerical value of the speed of light in vacuum to exactly 299,792,458 meters per second. Every other SI length unit derives from the meter.
The meter was originally defined in 1793 by the French Academy of Sciences as one ten-millionth of the distance from the equator to the North Pole along a meridian through Paris. It has been redefined multiple times — by physical prototype, then by atomic transitions, and finally in 2019 by fundamental physical constants.
The meter is the international standard for length in science, engineering, construction, athletics, and everyday measurement in metric countries. It underpins definitions of area (m²), volume (m³), and most derived SI units.
Established 1793 in France; ratified internationally via the Metre Convention 1875; redefined in 1960, 1983, and most recently 2019 when the SI redefinition fixed it to the speed of light.
Inch
An inch is an Imperial and US customary unit of length defined since 1959 as exactly 25.4 millimeters (0.0254 meters). It is still the standard small unit of length in the United States, the United Kingdom (informally), and a few other countries.
The inch derives from the Roman uncia (one-twelfth of a foot) and survived through Anglo-Saxon and medieval English measurement systems. Various definitions persisted regionally until the 1959 International Yard and Pound Agreement standardized the inch globally as exactly 25.4 mm.
Inches are used in the US and UK for body height, screen sizes (TVs, monitors, phones), tire sizes, plumbing, lumber, paper sizes (US Letter is 8.5 × 11 in), and most consumer product specifications in the United States.
Anglo-Saxon origin (predating 1066); standardized to 25.4 mm exactly by the International Yard and Pound Agreement of 1959, signed by the US, UK, Canada, Australia, New Zealand, and South Africa.
Meter to Inch conversion formula
The relationship between meters and inches:
To convert meters to inches, multiply the value in meters by 39.3700787402. To reverse, multiply inches by 0.0254.
How to use this converter
Type a value into the calculator. The result in inches updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Inch to Meter converter for the reverse direction.
Step-by-step: convert meters to inches
- Write down the value in meters (m).
- Multiply that value by the factor 39.3700787402.
- The product is the equivalent value in inches (in).
- To reverse, multiply the inch value by 0.0254.
Worked examples
Example 1 — Convert 1 m to in:
1 × 39.3700787402 = 39.3700787402 in
Example 2 — Convert 100 m to in:
100 × 39.3700787402 = 3937.0078740157 in
Real-world example — Meter-stick to inches
A meter stick is exactly 39.37 inches long. Schoolchildren in metric countries learn this conversion as the bridge between their metric education and the inch-based products imported from the US.
1 m × 39.3700787402 = 39.3700787402 in
Real-world example — Pool-table dimensions
A 2-m pool table equals 78.74 inches. Pool-table manufacturers spec table sizes in inches (US convention) but pool halls in metric countries advertise table-size in meters.
2 m × 39.3700787402 = 78.7401574803 in
Real-world example — Tape-measure max range conversions
A 5-m construction tape equals 196.85 inches. Site engineers comparing US tape measures (often 25-foot, 300-inch) with European 5-m tapes convert m to in every time they document a measurement across systems.
5 m × 39.3700787402 = 196.8503937008 in
Meter to Inch conversion table
Standard reference values for converting meters to inches:
| Meter [m] | Inch [in] |
|---|---|
| 0.01 | 0.3937007874 |
| 0.1 | 3.937007874 |
| 1 | 39.3700787402 |
| 2 | 78.7401574803 |
| 3 | 118.1102362205 |
| 4 | 157.4803149606 |
| 5 | 196.8503937008 |
| 10 | 393.7007874016 |
| 20 | 787.4015748031 |
| 30 | 1181.1023622047 |
| 40 | 1574.8031496063 |
| 50 | 1968.5039370079 |
| 100 | 3937.0078740157 |
| 500 | 19685.0393700787 |
| 1000 | 39370.0787401575 |
Frequently asked questions
How many inches is 1 meter?
How do I convert meters to inches?
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How many inches is 100 meters?
Popular length unit conversions
Convert Meter to other length units
Show all Meter conversions
Metric / SI (17 units)
Imperial / US Customary (27 units)
Nautical (1 units)
Astronomical (9 units)
Atomic / Physics (6 units)
Typographic (3 units)
Sources & references
Conversion factor (1 m = 39.3700787402 in) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.