Unit Conversion
Length Converter
Free length converter for inches, feet, yards, miles, millimeters, centimeters, meters, and kilometers. Instantly convert feet to meters, miles to km, and more.
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Equivalent In All Units
How many centimeters is 5 feet 10 inches — or miles in kilometers?
US everyday length is inches, feet, yards, and miles. This converter also speaks metric. It is a general converter: if you always search “inches to cm,” a dedicated pair page would rank that query harder — here you pick both units.
US vs metric you will actually use
Height on US forms is often feet + inches, not total inches. Related: area is not length; TV distance is a length with a viewing rule on top.
| From | To |
|---|---|
| 1 in | 2.54 cm exactly |
| 1 ft | 12 in = 0.3048 m |
| 1 mi | 1.60934 km |
| 1 yd | 0.9144 m |
Frequently Asked Questions
How do I convert feet to meters?
Multiply the number of feet by 0.3048 to get meters. For example, 10 feet × 0.3048 = 3.048 meters. Our length converter does this instantly — just select 'Feet' as the from unit and 'Meters' as the to unit.
How many inches are in a foot?
There are exactly 12 inches in 1 foot. This is a fixed definitional relationship in the imperial system, so 1 foot always equals 12 inches regardless of context.
How do I use this as a miles to kilometers calculator?
Select 'Miles' as the from unit, 'Kilometers' as the to unit, and enter your distance. The conversion factor is 1 mile = 1.609344 kilometers, so 100 miles equals about 160.93 kilometers.
How do I convert cm to inches?
Divide the number of centimeters by 2.54 to get inches (since 1 inch = 2.54 cm exactly). For example, 30 cm ÷ 2.54 ≈ 11.81 inches. You can also just select 'Centimeters' and 'Inches' in the converter above.
What is the difference between a mile and a kilometer?
A mile is an imperial/US customary unit of length equal to 1,609.344 meters, while a kilometer is a metric unit equal to 1,000 meters. A mile is roughly 1.6 times longer than a kilometer, which is why road signs differ between countries that use miles (like the US and UK) and those that use kilometers.
How many yards are in a mile?
There are 1,760 yards in a mile. Since 1 yard = 0.9144 meters and 1 mile = 1,609.344 meters, dividing 1,609.344 by 0.9144 gives exactly 1,760 yards.
Is this length converter accurate for engineering or construction use?
The converter uses internationally standardized conversion factors (e.g., 1 inch = 25.4 mm exactly) that are accurate to many decimal places. For critical engineering, construction, or legal measurements, always double-check figures against official standards or measuring instruments.
How do I convert millimeters to inches?
Divide millimeters by 25.4 to get inches, since 1 inch is defined as exactly 25.4 millimeters. For example, 50 mm ÷ 25.4 ≈ 1.97 inches.
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About these results: Figures are for planning only. Confirm anything you will buy, bill, or submit (materials, payroll, medical screening) against the label, a quote, or a professional.