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Frequently Asked Questions
How many kilometres in a mile?
1 mile = 1.60934 kilometres. Conversely, 1 kilometre = 0.621371 miles. A quick approximation: multiply miles by 1.6 to get km, or multiply km by 0.6 to get miles.
How many cm in an inch?
1 inch = 2.54 centimetres exactly. This is the defined conversion. So 1 foot (12 inches) = 30.48 cm, and 1 metre = 39.3701 inches.
How do I convert feet and inches to centimetres?
First convert feet to inches (multiply by 12), add the remaining inches, then multiply by 2.54. Example: 5 feet 11 inches = (5×12 + 11) × 2.54 = 71 × 2.54 = 180.34 cm.
What is a nautical mile?
A nautical mile is 1,852 metres (1.852 km), defined as one minute of arc along a meridian of the Earth. It is used in aviation and maritime navigation. 1 nautical mile ≈ 1.15078 statute miles.