Recipes, furniture, screen sizes, heights and running distances mix U.S. and metric units all the time. This length converter switches between inches, feet, yards, miles, millimeters, centimeters, meters, kilometers and nautical miles. It also shows every result in feet and inches and lists your value in all units at once.
Quick answer: 1 inch = 2.54 cm (exact). 1 foot = 30.48 cm = 0.3048 m. 1 meter ≈ 3.28 feet ≈ 39.37 inches. 1 mile = 1.609 km. 12 in = 30.48 cm; 175 cm ≈ 5 ft 8.9 in.
How to use the length converter
- Type the value you want to convert.
- Choose the unit you have (From) and the unit you want (To). Use the swap button to reverse them.
- The result updates as you type. You also get the value in feet and inches and a table of every unit.
Length conversion factors
| Unit | Equals |
|---|---|
| 1 inch | 2.54 cm |
| 1 foot | 12 in = 30.48 cm |
| 1 yard | 3 ft = 0.9144 m |
| 1 mile | 5,280 ft = 1.609344 km |
| 1 centimeter | 0.393701 in |
| 1 meter | 3.28084 ft = 39.3701 in |
| 1 kilometer | 0.621371 mi |
| 1 nautical mile | 1,852 m = 1.15078 mi |
Inches to cm chart
| Inches | Centimeters |
|---|---|
| 1 in | 2.54 cm |
| 6 in | 15.24 cm |
| 12 in (1 ft) | 30.48 cm |
| 24 in (2 ft) | 60.96 cm |
| 36 in (1 yd) | 91.44 cm |
| 60 in (5 ft) | 152.4 cm |
| 72 in (6 ft) | 182.88 cm |
More values appear in the charts below the converter, including centimeters to feet and inches for common heights.
Examples
- Height: 5 ft 10 in = 70 in × 2.54 = 177.8 cm.
- Height in metric: 175 cm ÷ 2.54 = 68.9 in = 5 ft 8.9 in.
- Running: 10 km × 0.621371 = 6.21 miles.
- Room size: 12 ft × 0.3048 = 3.66 m.
Common mistakes
- Writing 5.9 ft for 5 ft 9 in. 5.9 ft is 5 ft 10.8 in. Use the feet-and-inches result instead.
- Rounding 2.54 to 2.5. Over long distances the error adds up.
- Mixing statute and nautical miles. A nautical mile is 15% longer.
Converting body measurements? Use the result in the BMI calculator or body fat calculator. For pounds and kilograms, see the weight converter; for °F and °C, the temperature converter.
Frequently asked questions
How many centimeters are in an inch?
One inch is exactly 2.54 centimeters. This has been the official definition since 1959. To convert inches to centimeters, multiply by 2.54: 12 in × 2.54 = 30.48 cm.
How do I convert cm to inches?
Divide by 2.54. For example, 100 cm ÷ 2.54 = 39.37 in. A quick estimate: 10 cm is just under 4 inches.
How tall is 175 cm in feet and inches?
175 cm ÷ 2.54 = 68.9 in. Divide by 12 to get feet: 5 ft with 8.9 in left over, so 175 cm is about 5 ft 9 in. 180 cm is about 5 ft 11 in and 160 cm is about 5 ft 3 in.
How many feet are in a meter?
One meter is about 3.28084 feet, and one foot is exactly 0.3048 meters. To convert feet to meters, multiply by 0.3048: 10 ft = 3.048 m.
How many kilometers are in a mile?
One mile is exactly 1.609344 kilometers, so a 5K race is about 3.1 miles and a marathon (26.2 miles) is about 42.2 km. To convert kilometers to miles, multiply by 0.621371.
How many inches are in a foot and a yard?
There are 12 inches in a foot, 3 feet (36 inches) in a yard and 5,280 feet (1,760 yards) in a mile.
What is a nautical mile?
A nautical mile is 1,852 meters, about 1.15 statute miles. It is used at sea and in aviation because it corresponds to one minute of latitude.
How do I convert feet and inches to centimeters?
Turn the height into inches first (feet × 12 + inches), then multiply by 2.54. 5 ft 6 in = 66 in × 2.54 = 167.64 cm.
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