Length Unit Converter
The length unit converter allows you to convert between commonly used length measurements such as meters, feet, inches, centimeters, kilometers, and miles. This tool is useful for students, engineers, construction professionals, and anyone working with measurements. Select a conversion below or choose from popular length unit conversions.
Supported Length Units
| Unit | Short Form | Description |
|---|---|---|
| Meter | m | SI base unit of length |
| Kilometer | km | 1,000 meters, commonly used for long distances |
| Centimeter | cm | 1/100 of a meter, useful for everyday measurements |
| Millimeter | mm | 1/1,000 of a meter, used for precision measurements |
| Micrometer | um | 1/1,000,000 of a meter, used in microscopy |
| Nanometer | nm | 1/1,000,000,000 of a meter, used for wavelengths |
| Inch | in | Imperial unit, 1/12 of a foot |
| Foot | ft | Imperial unit equal to 12 inches |
| Yard | yd | Imperial unit equal to 3 feet |
| Mile | mi | Imperial unit equal to 5,280 feet |
| Link | li | Surveying unit, 1/100 of a chain |
| Rod | rd | Surveying unit equal to 16.5 feet |
| Chain | ch | Surveying unit equal to 66 feet |
| Angstrom | angstrom | 10^-10 meters, used in atomic measurements |
| Mil | mil | 1/1,000 of an inch, used in engineering |
| Picometer | pm | 10^-12 meters, used in atomic physics |
| Femtometer | fm | 10^-15 meters, used in nuclear physics |
| Attometer | am | 10^-18 meters, used in particle physics |
| Decameter | dam | 10 meters |
| Hectometer | hm | 100 meters |
| Megameter | Mm | 1,000,000 meters |
| Gigameter | Gm | 1,000,000,000 meters |
Popular Length Conversions
- Meter to Feet
- Feet to Meter
- Inch to Centimeter
- Centimeter to Inch
- Mile to Kilometer
- Kilometer to Mile
How Length Unit Conversion Works
Length units are converted using fixed mathematical ratios.
For example, 1 meter equals 39.3701 inches.
Our length converter uses accurate conversion factors to ensure precise results.
Common Use Cases
- Construction and architecture measurements
- Academic and homework calculations
- Engineering and manufacturing
- Travel and map distance conversion
Frequently Asked Questions
How accurate is the length unit converter?
Our converter uses precise conversion factors maintained by international standards organizations. Results are accurate to multiple decimal places, making it suitable for both casual and professional use.
What’s the difference between metric and imperial units?
The metric system (meters, centimeters, kilometers) is based on powers of 10, making it easier to convert between units. The imperial system (feet, inches, yards, miles) uses different conversion factors and is primarily used in the United States.
How many feet are in a meter?
1 meter equals approximately 3.28084 feet. Conversely, 1 foot equals approximately 0.3048 meters.
How many centimeters are in an inch?
1 inch equals exactly 2.54 centimeters. This is one of the most commonly used conversion factors.
Can I convert between metric and imperial units?
Yes, our converter supports conversions between all metric units (meters, kilometers, centimeters, millimeters) and imperial units (feet, inches, yards, miles).
Why do different countries use different length units?
Historically, different regions developed their own measurement systems. While most countries now use the metric system, the United States and a few other countries still primarily use imperial units. Both systems are supported in our converter for international compatibility.
How do I convert kilometers to miles?
To convert kilometers to miles, multiply the number of kilometers by 0.621371. For example, 5 kilometers equals approximately 3.107 miles.