Length Conversion Calculator
Convert length between inches, feet, meters, centimeters, miles, kilometers, yards, and more — with instant bidirectional conversion.
Calcady™ · Calculation Report Length Converter calcady.com Unit Converter3.28084 Converted Value3.28084 Feet |
Quick Answer: Common Length Conversions
1 inch = 2.54 cm (exact). 1 foot = 0.3048 m. 1 mile = 1.60934 km. 1 meter = 3.28084 feet. These are the four most-searched length conversions. Enter any value above for instant conversion to all supported units.
Length Conversion Reference
| From | To | Multiply By |
|---|---|---|
| Inches | Centimeters | 2.54 |
| Feet | Meters | 0.3048 |
| Yards | Meters | 0.9144 |
| Miles | Kilometers | 1.60934 |
| Meters | Feet | 3.28084 |
| Kilometers | Miles | 0.62137 |
Frequently Asked Questions
Why is 1 inch exactly 2.54 cm?
In 1959, the international yard and pound agreement formally defined 1 yard as exactly 0.9144 meters, making 1 inch exactly 25.4 mm (2.54 cm). This is not an approximation — it is the legal definition. Before 1959, the US and British inches differed by about 2 parts per million.
What is the difference between a nautical mile and a statute mile?
A statute mile is 5,280 feet (1,609m). A nautical mile is 6,076 feet (1,852m) — defined as one minute of latitude on Earth's surface. Nautical miles are used in aviation and maritime navigation because they correspond directly to degrees of latitude, making chart reading intuitive.
How do I convert feet and inches to decimal feet?
Divide the inches by 12 and add to the feet. 5 feet 8 inches = 5 + (8/12) = 5.667 feet. For fractions: 5 feet 8¼ inches = 5 + (8.25/12) = 5.688 feet. Construction plans often use decimal feet, while field measurements use feet-inches — always verify which format is expected.