Length Converter
Convert between meters, feet, inches, miles and more.
How this calculator works
Method
Converts to and from a base unit (meter) via known factors.
Example
1 meter = 3.281 feet.
The complete guide to the Length Converter
The length converter handles the most common unit-conversion task on the internet: turning meters into feet, kilometers into miles, and every other pair you'll ever need. Behind the two dropdowns is a single principle — convert to a base unit and out again.
How the tool works
Every unit is stored with a factor to the base unit (meter). To convert, multiply by the source's factor and divide by the target's factor. It's fast, exact, and never rounds too early.
The conversions you'll actually memorize
1 meter = 3.281 feet. 1 kilometer = 0.621 miles. 1 inch = 2.54 cm exactly. 1 mile = 1.609 km. These five cover most real-world conversions.
Where humans get it wrong
Cube conversions. 1 m³ is not 3.281 ft³ — it's 3.281³ = 35.31 ft³. The tool cubes for you when using volume; keep this in mind for hand math.
Metric vs imperial in practice
Almost every country uses metric. The U.S. system defines the inch as exactly 25.4 mm, so it's metric underneath — the surface is just customary units.
When precision matters
For engineering or scientific work, avoid intermediate rounding. Enter the full value, convert once, and round only at the final display. This tool does exactly that internally.
Common pairs and their factors
mm → in: divide by 25.4. cm → in: divide by 2.54. m → yd: multiply by 1.094. km → mi: multiply by 0.621. mi → km: multiply by 1.609. ft → m: divide by 3.281.
Beyond length
Morecalcs also covers weight, volume, temperature, area, speed, and data storage. All follow the same base-unit conversion pattern for accuracy.
Frequently asked questions
Is 1 mile exactly 1.609 km?
It's 1.609344 km exactly by international definition.
What's the difference between statute mile and nautical mile?
1 nautical mile = 1.852 km, based on 1 minute of latitude. Statute mile is 1.609 km.