Convert between metres, feet, inches, miles and more — see every unit at once.
Converted instantly in your browser.
How do you convert between metres, feet, inches and miles?
Each value is converted to metres using its factor, then divided by the target unit factor — for example, 1 inch = 0.0254 m and 1 foot = 0.3048 m. Metric units scale by powers of ten, while imperial units use fixed ratios (12 inches to a foot, 3 feet to a yard, 1,760 yards to a mile). So 1 metre = 3.2808 feet = 39.37 inches = 100 centimetres.
Understanding your result
Metric units scale by powers of ten, while imperial units use fixed ratios (12 inches to a foot, 3 feet to a yard, 1,760 yards to a mile).
Formula and method
Each value is converted to metres using its factor, then divided by the target unit factor. For example, 1 inch = 0.0254 m and 1 foot = 0.3048 m.
Assumptions and limitations
Every result is an exact mathematical ratio built on the international definitions (1 inch = 2.54 cm, 1 mile = 1,609.344 m), so figures are precise to the digits shown and only rounded for display. The tool measures straight-line length, not driving distance or area, and does not convert the US survey foot used in some land records, which differs from the international foot by about two parts per million.
Worked example
1 metre = 3.2808 feet = 39.37 inches = 100 centimetres.
Common length conversions
| Convert | Equals |
|---|---|
| 1 kilometre | 0.621371 miles |
| 1 mile | 1.60934 kilometres |
| 1 metre | 3.28084 feet |
| 1 foot | 30.48 centimetres |
| 1 inch | 2.54 centimetres |
| 1 yard | 0.9144 metres |
| 1 centimetre | 0.393701 inches |
| 1 metre | 39.3701 inches |
| 1 mile | 5,280 feet |
| 1 nautical mile | 1.852 kilometres |
How to use this tool
- Enter the value to convert.
- Choose the unit to convert from and to.
- Read the result and the full unit table.
Common mistakes to avoid
- Mixing up centimetres and millimetres — there are 10 mm in 1 cm.
About the Length Converter
Convert any length or distance between metric and imperial units. Enter a value, pick the units, and see the result plus the same value in every other unit at once.
Who should use this tool
Anyone moving between metric and imperial length — students checking geometry and physics answers, DIY and construction workers reading plans in feet and inches, runners and cyclists comparing routes in kilometres and miles, and designers or engineers switching between millimetres, centimetres and inches. It also covers the nautical mile used in aviation and marine navigation.
Benefits
- Shows the value in every supported unit at once, so you see the full picture in one step
- Uses internationally agreed exact conversion factors, not rounded approximations
- Runs instantly and entirely in your browser — no numbers are sent to a server
- Handles very large and very small measurements cleanly with scientific notation
Practical use cases
- Converting a running or cycling route between kilometres and miles
- Reading furniture, room or construction dimensions given in feet and inches
- Checking school or university answers in both metric and imperial units
- Translating map and chart distances quoted in nautical miles
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Frequently asked questions
How many cm are in an inch?
Exactly 2.54 centimetres equal one inch.
How many feet are in a metre?
One metre is about 3.2808 feet.
How do I convert kilometres to miles?
Multiply kilometres by 0.621371 to get miles, since one kilometre is 0.621371 miles. For a quick mental estimate, multiply by 5 and divide by 8. To convert miles to kilometres, multiply by 1.60934 instead.