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Length Converter

72 conversions available

Convert between meters, feet, inches, miles, kilometers and more.

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Meters → Kilometers Meters → Centimeters Meters → Millimeters Meters → Miles Meters → Yards Meters → Feet Meters → Inches Meters → Nautical Miles Kilometers → Meters Kilometers → Centimeters Kilometers → Millimeters Kilometers → Miles Kilometers → Yards Kilometers → Feet Kilometers → Inches Kilometers → Nautical Miles Centimeters → Meters Centimeters → Kilometers Centimeters → Millimeters Centimeters → Miles Centimeters → Yards Centimeters → Feet Centimeters → Inches Centimeters → Nautical Miles Millimeters → Meters Millimeters → Kilometers Millimeters → Centimeters Millimeters → Miles Millimeters → Yards Millimeters → Feet Millimeters → Inches Millimeters → Nautical Miles Miles → Meters Miles → Kilometers Miles → Centimeters Miles → Millimeters Miles → Yards Miles → Feet Miles → Inches Miles → Nautical Miles Yards → Meters Yards → Kilometers Yards → Centimeters Yards → Millimeters Yards → Miles Yards → Feet Yards → Inches Yards → Nautical Miles Feet → Meters Feet → Kilometers Feet → Centimeters Feet → Millimeters Feet → Miles Feet → Yards Feet → Inches Feet → Nautical Miles Inches → Meters Inches → Kilometers Inches → Centimeters Inches → Millimeters Inches → Miles Inches → Yards Inches → Feet Inches → Nautical Miles Nautical Miles → Meters Nautical Miles → Kilometers Nautical Miles → Centimeters Nautical Miles → Millimeters Nautical Miles → Miles Nautical Miles → Yards Nautical Miles → Feet Nautical Miles → Inches

Most popular length conversions

The most searched length conversions are cm to inches, feet to meters, and miles to kilometers. One inch equals exactly 2.54 cm, one foot is 0.3048 meters, and one mile is 1.609 kilometers. These come up constantly in DIY, travel, and international product specs.

Understanding length units

Length splits into the metric system (meters, centimeters, kilometers) used by most of the world and the imperial/US system (inches, feet, yards, miles). Aviation uses feet for altitude, shipping uses nautical miles, and manufacturing works in millimeters. All metric-imperial length conversions are exact by international definition.

Quick reference

1 inch = 2.54 cm · 1 foot = 0.3048 m · 1 yard = 0.9144 m · 1 mile = 1.609 km · 1 meter = 3.281 feet · 1 km = 0.621 miles. Use the converter for any exact value.

Quick reference: common length conversions

1 inch 2.54 cm (exact)
1 foot 30.48 cm
1 yard 0.9144 m
1 mile 1.609 km
1 kilometer 0.621 miles
1 meter 3.281 feet
1 nautical mile 1.852 km
1 centimeter 0.394 inches

Frequently asked questions

Is the inch-to-centimeter conversion exact?

Yes. Since 1959 the inch has been defined as exactly 2.54 centimeters by international agreement, so every inch-metric conversion is precise rather than approximate.

What is the difference between a mile and a nautical mile?

A statute mile is 1.609 km and comes from land measurement. A nautical mile is 1.852 km — one minute of latitude — which is why sea and air navigation use it.

How do I quickly estimate kilometers to miles?

Multiply by 0.6. So 100 km is about 62 miles. For the reverse, add roughly 60% to the miles figure.