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Length Converter
Metres, feet, inches, miles
Converted Length
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What is a Length Converter?
Converts between metric (mm, cm, m, km) and imperial (inches, feet, yards, miles) length units, plus nautical miles.
How It Works
All conversions via a common base (metres). 1 inch = 2.54 cm exactly. 1 foot = 12 inches. 1 mile = 1.609344 km.
Example
5 feet 10 inches = 177.8 cm = 1.778 m. Marathon 42.195 km = 26.219 miles.
Pro Tips
- 1 inch = 2.54 cm exactly - the definition of the international inch since 1959.
- Common heights: 5'0"=152.4 cm; 5'6"=167.6 cm; 6'0"=182.9 cm.
- Indian land units: 1 acre = 4,047 m2; 1 hectare = 10,000 m2.
- Aviation uses nautical miles; astronomy uses light-years and parsecs.
FAQ
How many cm in an inch?▼
Exactly 2.54 cm. 1 foot = 30.48 cm. 1 yard = 91.44 cm. 1 mile = 160,934 cm.
km to miles?▼
1 km = 0.6214 miles. 1 mile = 1.6093 km. Marathon (42.195 km) = 26.22 miles.
What is a nautical mile?▼
1 nautical mile = 1.852 km = 1 arc-minute of latitude. Used in aviation and marine navigation.
Height in cm from feet and inches?▼
Feet x 30.48 + Inches x 2.54. E.g., 5 feet 9 inches = 175.26 cm.