Convert Inches (in) to Meters (m)
1 inch equals 0.0254 meters.
Formula:
m = in × 0.0254
Inch to Meter Converter
Enter a numeric value or fraction to convert
Result
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How to Convert Inch to Meter
1 inch = 0.0254 meters
Meter = Inch × 0.0254
Example: 1 in × 0.0254 = 0.0254 m
Reverse Conversion
To convert meters back to inches:
- Remember, 1 meter equals 39.3701 inches.
- To convert 0.0254 m to in, multiply
0.0254 x 39.3701, resulting in1 in.
Fractional Inches to Meter Chart
Common fractional inch values and their equivalents in m. Useful for machining, woodworking, drill bits, and precision measurements.
Fractions of an inch (1/64″ to 1″)
| Fraction (in) | Decimal (in) | m |
|---|---|---|
| 1/64″ | 0.0156 | 0.0004 |
| 1/32″ | 0.0313 | 0.0008 |
| 3/64″ | 0.0469 | 0.0012 |
| 1/16″ | 0.0625 | 0.0016 |
| 5/64″ | 0.0781 | 0.0020 |
| 3/32″ | 0.0938 | 0.0024 |
| 7/64″ | 0.1094 | 0.0028 |
| 1/8″ | 0.1250 | 0.0032 |
| 9/64″ | 0.1406 | 0.0036 |
| 5/32″ | 0.1563 | 0.0040 |
| 11/64″ | 0.1719 | 0.0044 |
| 3/16″ | 0.1875 | 0.0048 |
| 13/64″ | 0.2031 | 0.0052 |
| 7/32″ | 0.2188 | 0.0056 |
| 15/64″ | 0.2344 | 0.0060 |
| 1/4″ | 0.2500 | 0.0064 |
| 17/64″ | 0.2656 | 0.0067 |
| 9/32″ | 0.2813 | 0.0071 |
| 19/64″ | 0.2969 | 0.0075 |
| 5/16″ | 0.3125 | 0.0079 |
| 21/64″ | 0.3281 | 0.0083 |
| 11/32″ | 0.3438 | 0.0087 |
| 23/64″ | 0.3594 | 0.0091 |
| 3/8″ | 0.3750 | 0.0095 |
| 25/64″ | 0.3906 | 0.0099 |
| 13/32″ | 0.4063 | 0.0103 |
| 27/64″ | 0.4219 | 0.0107 |
| 7/16″ | 0.4375 | 0.0111 |
| 29/64″ | 0.4531 | 0.0115 |
| 15/32″ | 0.4688 | 0.0119 |
| 31/64″ | 0.4844 | 0.0123 |
| 1/2″ | 0.5000 | 0.0127 |
| 33/64″ | 0.5156 | 0.0131 |
| 17/32″ | 0.5313 | 0.0135 |
| 35/64″ | 0.5469 | 0.0139 |
| 9/16″ | 0.5625 | 0.0143 |
| 37/64″ | 0.5781 | 0.0147 |
| 19/32″ | 0.5938 | 0.0151 |
| 39/64″ | 0.6094 | 0.0155 |
| 5/8″ | 0.6250 | 0.0159 |
| 41/64″ | 0.6406 | 0.0163 |
| 21/32″ | 0.6563 | 0.0167 |
| 43/64″ | 0.6719 | 0.0171 |
| 11/16″ | 0.6875 | 0.0175 |
| 45/64″ | 0.7031 | 0.0179 |
| 23/32″ | 0.7188 | 0.0183 |
| 47/64″ | 0.7344 | 0.0187 |
| 3/4″ | 0.7500 | 0.0191 |
| 49/64″ | 0.7656 | 0.0194 |
| 25/32″ | 0.7813 | 0.0198 |
| 51/64″ | 0.7969 | 0.0202 |
| 13/16″ | 0.8125 | 0.0206 |
| 53/64″ | 0.8281 | 0.0210 |
| 27/32″ | 0.8438 | 0.0214 |
| 55/64″ | 0.8594 | 0.0218 |
| 7/8″ | 0.8750 | 0.0222 |
| 57/64″ | 0.8906 | 0.0226 |
| 29/32″ | 0.9063 | 0.0230 |
| 59/64″ | 0.9219 | 0.0234 |
| 15/16″ | 0.9375 | 0.0238 |
| 61/64″ | 0.9531 | 0.0242 |
| 31/32″ | 0.9688 | 0.0246 |
| 63/64″ | 0.9844 | 0.0250 |
| 1″ | 1.0000 | 0.0254 |
Whole inches (2″ to 12″)
| Inches | m |
|---|---|
| 2″ | 0.0508 |
| 3″ | 0.0762 |
| 4″ | 0.1016 |
| 5″ | 0.1270 |
| 6″ | 0.1524 |
| 7″ | 0.1778 |
| 8″ | 0.2032 |
| 9″ | 0.2286 |
| 10″ | 0.2540 |
| 11″ | 0.2794 |
| 12″ | 0.3048 |
Bold rows indicate common fractions (1/8, 1/4, 3/8, 1/2, etc.). The conversion factor 1 inch = 25.4 mm is exact by international definition.
Inches to meters Conversion Table
Reference table with common inches to meters conversions. All values calculated with high precision.
Inches to Meters Table
100 to 10000000
Meters to Inches Table
1 to 100000
Definition of Inch
- Definition
- Imperial/US customary unit standardized as exactly 25.4 millimeters since 1959.
- Exact factor
- 1 in = 25.4 mm = 2.54 cm
- Sources
- NIST SP 811
Definition of Meter
- Definition
- SI fundamental unit of length defined by the speed of light in vacuum (299,792,458 m/s).
- Exact factor
- Base unit: 1 m
- Sources
- BIPM — SI Brochure
About the Inch
Facts & Uses
- Dominant in US construction, plumbing (pipe diameters), electronics (screen sizes), and hardware (screws, bolts).
- Screen technology: TVs, monitors, phones measured diagonally in inches; DPI (dots per inch) defines display resolution.
- Fractional system in construction: 1/2", 1/4", 1/8", 1/16" for precise fitting; decimal inches in engineering and machining.
- Paper sizes: US letter 8.5 × 11 inches, legal 8.5 × 14 inches; tire dimensions use inches for rim diameter.
Curiosities
- Historical origin: three barleycorns placed end-to-end; width of adult thumb at knuckle.
- Exactly 25.4 mm since 1959 international agreement, ending slight variations between countries.
- Symbol "" (double prime) distinguishes from feet (') in architectural and engineering drawings.
- Smartphone screens paradox: measured diagonally in inches despite metric internal components and manufacturing.
Sources
About the Meter
Facts & Uses
- SI base unit defined by the speed of light (299,792,458 m/s), ensuring global scientific standardization and measurement traceability.
- Foundation for construction, engineering, surveying, and manufacturing worldwide; critical for international trade and technical specifications.
- Used in athletics (100m sprint, 1500m race), swimming pools (50m length), and architectural drawings with millimeter precision.
- Subdivisions: millimeter (precision manufacturing), centimeter (everyday use), multiples: kilometer (geography, transportation).
Curiosities
- Originally defined as one ten-millionth of the distance from equator to pole; redefined multiple times for increasing precision.
- Current definition (1983) makes the speed of light exact, tying length to time and universal constants.
- A meter is approximately 39.37 inches or 3.28 feet, slightly longer than a yard (0.9144 m).
- In space exploration, precision to the nanometer (10⁻⁹ m) enables laser interferometry and gravitational wave detection.
Sources
Frequently Asked Questions
How many meters are in one inch?
One inch equals 0.0254 meters. To convert, multiply the inch value by 0.0254. For the reverse, divide the meter value by 0.0254 (or multiply by 39.3701).
What is 0.015 inches in meters?
0.015 inches = 0.000381 meters. This is one of the most commonly searched conversions for this pair.
Is the inch-to-meter conversion exact?
Yes. The factor 0.0254 is exact by international definition, not an approximation. Any imprecision comes only from the original measurement, not the conversion.
Looking for the reverse? Convert Meter to Inch
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Conversion factors verified against NIST, BIPM, ISO 80000-3
1 inch = 2.54 cm by international agreement (1959).
Last reviewed: March 2026
