Free Online Length Converter

Convert between meters, kilometers, miles, feet, inches, and more instantly with formula display.

Result
Formula

How the Length Converter Works

This tool converts between nine common length and distance units using precise conversion factors. Enter any numeric value, choose the source and target units, and get an instant result. The conversion is performed by first converting the input to meters (the SI base unit), then converting from meters to the desired target unit. The formula used is displayed below each result so you can verify the math.

Common Length Conversions Reference

FromToFactor
1 KilometerMiles0.621371
1 MileKilometers1.60934
1 MeterFeet3.28084
1 FootCentimeters30.48
1 InchCentimeters2.54
1 YardMeters0.9144
1 Nautical MileKilometers1.852

When to Use a Length Converter

Length conversions are needed every day — from converting kilometres to miles while travelling abroad, to switching between feet and meters for home improvement projects. Engineers, students, and travellers rely on accurate length conversion to avoid costly mistakes. This tool supports metric, imperial, and nautical units so you always have the right answer at hand.

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Frequently Asked Questions

How many feet are in a mile?
There are exactly 5,280 feet in one mile, or equivalently 1,760 yards.
What is the difference between a nautical mile and a regular mile?
A nautical mile equals 1,852 meters (about 1.151 regular miles). It is used in maritime and aviation navigation and is based on one minute of latitude.
How do I convert inches to centimeters?
Multiply the number of inches by 2.54. For example, 10 inches equals 25.4 centimeters.
Are the conversions exact?
Most conversions in this tool use internationally agreed exact definitions. For example, 1 inch is defined as exactly 25.4 mm, and 1 yard is exactly 0.9144 meters.
Is my data stored anywhere?
No. All conversions run entirely in your browser. No data is sent to any server.