Length Converter - Convert Length Units
Convert nanometers, micrometers, millimeters, centimeters, decimeters, meters, kilometers, inches, feet, yards, miles, nautical miles, mils, and typographic points.
What Is a Length Converter?
A length converter helps you convert between different units of measurement for distance and length. Whether you're working on a DIY project, traveling, or studying, this tool makes unit conversion quick and accurate.
How to Use This Converter
- Enter a value — Type the number you want to convert. Changing the value does not update the displayed result yet.
- Select From and To units — Choose the source and target units. The displayed result stays unchanged until you convert.
- Press Convert — Click Convert to calculate the new result. You can also press Enter in the Value field.
- Swap — Reverse the From and To units and convert using the current value, without retyping it.
- Copy or Reset — Copy the displayed result, or restore the default 1 meter to inches conversion.
Length Unit Conversion Table
| Unit | Abbreviation | Conversion to Meters |
|---|---|---|
| Nanometer | nm | 0.000000001 m |
| Micrometer | µm | 0.000001 m |
| Millimeter | mm | 0.001 m |
| Centimeter | cm | 0.01 m |
| Decimeter | dm | 0.1 m |
| Meter | m | 1 m |
| Kilometer | km | 1,000 m |
| Mil (thou) | mil | 0.0000254 m |
| Point (PostScript) | pt | 0.0003527777777777778 m |
| Inch | in | 0.0254 m |
| Foot | ft | 0.3048 m |
| Yard | yd | 0.9144 m |
| Mile | mi | 1,609.344 m |
| Nautical mile | nmi | 1,852 m |
Practical Uses
- DIY Projects: Convert between metric and imperial measurements for woodworking, sewing, and home improvement
- Travel: Understand distances in different countries
- Education: Learn and practice unit conversions
- Science: Work with different measurement systems in experiments
- Construction: Convert measurements for building and renovation projects
Common Length Conversions
| From | To | Formula |
|---|---|---|
| 1 inch | cm | 2.54 cm |
| 1 foot | cm | 30.48 cm |
| 1 meter | inches | 39.37007874 in |
| 1 kilometer | miles | 0.6213711922 mi |
| 1 mile | km | 1.609344 km |
| 1 nautical mile | km | 1.852 km |
| 1 mil | mm | 0.0254 mm |
Frequently Asked Questions
What units can I convert?
This converter supports nanometers (nm), micrometers (µm), millimeters (mm), centimeters (cm), decimeters (dm), meters (m), kilometers (km), mils (mil), PostScript points (pt), inches (in), feet (ft), yards (yd), miles (mi), and nautical miles (nmi).
How accurate is the conversion?
Conversions use international SI and imperial factors with the meter as the base unit (for example, 1 inch = 0.0254 m exactly, 1 nautical mile = 1,852 m exactly). Results are formatted to keep meaningful precision without padding extra zeros.
Can I use this for scientific measurements?
It is suitable for everyday, school, and general technical work from nanometers to nautical miles. It is not a specialized laboratory unit converter and does not include units such as ångströms, astronomical units, or light-years.
What is a nautical mile?
A nautical mile is 1,852 meters exactly. It is used in marine and aviation navigation and is not the same as a statute mile (1,609.344 m).
What is a mil?
A mil (also called a thou) is one thousandth of an inch, or 0.0000254 meters. It is commonly used in manufacturing and engineering drawings.
Does this work offline?
Yes, once the page loads, the converter works offline without an internet connection.