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Length
Length Converter
Convert meters, feet, miles, inches, and more
Conversion Formula
Target = Value × (From Ratio / To Ratio)
Length conversions use the formula: Target = Value × (From Unit Ratio / To Unit Ratio). To convert meters to feet: multiply by 1 / 0.3048 ≈ 3.28084.
Length conversions are crucial in engineering, construction, travel, and science. This converter easily handles everything from nanometers to nautical miles.
Whether you're converting your height from feet to centimeters, measuring a room in meters versus feet, or planning a road trip in miles versus kilometers, this tool has you covered.
All Supported Length Units
| Unit | Symbol | Definition |
|---|---|---|
| Meter | m | The SI base unit of length, defined by the speed of light in a vacuum. |
| Kilometer | km | One thousand meters, used for measuring geographic distances. |
| Decimeter | dm | One-tenth of a meter, used in scientific measurements. |
| Centimeter | cm | One-hundredth of a meter, common in everyday and medical measurements. |
| Millimeter | mm | One-thousandth of a meter, used for precision engineering. |
| Micrometer | µm | One-millionth of a meter, used in microscopy and semiconductor manufacturing. |
| Nanometer | nm | One-billionth of a meter, used in nanotechnology and molecular biology. |
| Mile | mi | The imperial unit of distance equal to 5,280 feet or 1,760 yards. |
| Yard | yd | The imperial unit of length equal to 3 feet, used in US and UK. |
| Foot | ft | The imperial unit of length equal to 12 inches, used in construction. |
| Inch | in | The imperial unit of length equal to 1/12 of a foot. |
| Nautical Mile | nmi | A maritime and aviation distance unit equal to one minute of latitude. |
| Light Year | ly | The distance light travels in one year, used for interstellar distances. |
| Astronomical Unit | AU | The average Earth-Sun distance, used for solar system measurements. |
| Parsec | pc | A unit equal to 3.26 light-years, used in professional astronomy. |
Common Length Conversions
| From | To | Value |
|---|---|---|
| 1 m | ft | 3.281 |
| 1 m | in | 39.370 |
| 1 m | yd | 1.094 |
| 1 km | mi | 0.621 |
| 1 mi | km | 1.609 |
| 1 ft | m | 0.305 |
| 1 in | cm | 2.54 |
| 1 nmi | km | 1.852 |
Frequently Asked Questions
One meter equals approximately 3.28084 feet. To convert meters to feet, multiply the meter value by 3.281.
One inch equals exactly 2.54 centimeters. This is a fixed conversion factor used internationally.
A nautical mile (1,852 meters) is used in aviation and maritime navigation. It equals one minute of latitude and is approximately 1.15 statute miles.
To convert mm to inches, divide the millimeter value by 25.4. For example, 10 mm ÷ 25.4 = 0.394 inches. This is one of the most common conversion queries in engineering.
One mile equals 1.609 kilometers. Miles are used in the US and UK for road distances, while kilometers are used in most other countries. To convert miles to km, multiply by 1.609.
There are exactly 1,000 meters in 1 kilometer. The prefix 'kilo-' means one thousand in the metric system.
A light year is the distance light travels in one year (about 9.46 trillion km). It is used to measure interstellar and galactic distances in astronomy.
There are exactly 12 inches in 1 foot. This is a standard US customary conversion used in construction, height measurement, and everyday use.