Convert length units between centimeters, inches, feet, meters, kilometers, miles, yards, nautical miles, and more, every unit shown at once. Free, instant, high-precision.
Type a distance in any unit and the tool instantly shows the equivalent in millimetres, centimetres, metres, kilometres, inches, feet, yards, miles, and nautical miles, all at the same time. A from/to selector with a swap button handles the common pair you care about, while the all-units grid lets you copy any value with a click.
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Switch between millimetres, centimetres, metres, kilometres, inches, feet, yards, and miles in one place. Enter a value once and every other unit updates, so you can move between a metric spec sheet and imperial tooling without chaining separate conversions.
Select your starting unit, for example centimetres, feet, or miles, from the left dropdown.
Type the number. All other units update immediately in the grid below.
Use the To selector for a specific target, swap the direction, or click any unit card to copy it.
Measure up furniture in centimetres but buy timber in feet, read a running route in kilometres when you think in miles, or check a homework answer in seconds. Conversions run locally in your browser, so there's no rounding surprise from a server round-trip and nothing you type ever leaves the page.
1 inch = 2.54 centimeters exactly. So to convert inches to cm, multiply by 2.54. To convert cm to inches, divide by 2.54.
Multiply your height in feet by 30.48 to get centimeters. Or enter feet and inches separately: 5 feet 8 inches = (5 × 30.48) + (8 × 2.54) = 152.4 + 20.32 = 172.72 cm.
1 mile = 1.60934 kilometers. To convert miles to km, multiply by 1.609. To convert km to miles, multiply by 0.6214.
1 meter = 3.28084 feet. To convert meters to feet, multiply by 3.281. To convert feet to meters, multiply by 0.3048.
A yard is 0.9144 meters (slightly shorter). 1 meter = 1.0936 yards. In practical terms, a meter is about 3.3 feet and a yard is 3 feet. Meters are metric; yards are imperial.
1 centimeter = 10 millimeters. 1 meter = 100 centimeters = 1,000 millimeters. Common reference: a credit card is about 85mm long (8.5cm), and a standard door is roughly 2,000mm (2 meters).
Divide centimetres by 2.54 to get inches, then convert to feet and inches. For example 170 cm = 66.9 in = 5 ft 6.9 in. Enter a value and the converter shows feet-and-inches directly.
One inch equals exactly 2.54 cm. The converter uses this factor for cm-to-inch and inch-to-cm, plus mm, metres, feet, yards, miles and more.
Enter your height in either system and switch units; it converts between cm, metres, and feet-and-inches so you can quote your height in whichever format a form needs.
Enter your height in feet and inches and select centimeters as the target, the tool returns the exact value.
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