Convert between different units of length and distance with our free Length Converters. Whether you are working on a construction project, solving a math problem, or simply checking a measurement, these tools are essential.
Browse the list below to instantly convert between Metric units (Meters, Centimeters, Millimeters) and Imperial units (Feet, Inches, Yards, Miles).
Master Length Converter
Length & Distance Conversion Directory
Comprehensive conversion guides for microscopic, imperial, nautical, and astronomical distance measurements.
Metric (SI) Units
- Millimeters to Centimeters
- Centimeters to Meters
- Meters to Kilometers
- Nanometers to Micrometers
- Millimeters to Meters
- Kilometers to Meters
- Micrometers to Millimeters
Imperial / US Units
- Inches to Feet
- Feet to Yards
- Yards to Miles
- Feet to Inches
- Miles to Feet
- Inches to Centimeters
- Feet to Meters
Nautical & Survey
- Miles to Nautical Miles
- Nautical Miles to Kilometers
- Fathoms to Feet
- Chains to Yards
- Furlongs to Miles
- Links to Inches
- Nautical Miles to Meters
Micro & Astro
- Meters to Astronomical Units
- Light Years to Miles
- Angstroms to Nanometers
- Inches to Mils (Thou)
- Microns to Millimeters
- Millimeters to Nanometers
- AU to Kilometers
Frequently Asked Questions
In 1959, the International Yard and Pound agreement standardized the inch to be exactly 25.4 mm. This created a bridge between the Metric and Imperial systems, allowing for precise international engineering standards.
To convert meters to feet, multiply the value by 3.28084. For a quick mental estimate, multiplying by 3.3 will give you a close approximation for daily use.
A light year is a unit of distance, not time. It is the distance light travels in a vacuum in one Julian year—approximately 5.88 trillion miles or 9.46 trillion kilometers.
They are the same thing. ‘Micrometer’ (µm) is the official SI name for one-millionth of a meter, while ‘Micron’ is the common name used frequently in manufacturing and science for the same unit.