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Type a number in millimeters, centimeters, meters, kilometers, inches, feet, yards, or miles.
Length converter
Type in any unit — all others update instantly (metric & imperial).
Size comparison
About the same length as a meter stick — similar order of magnitude.
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Reference
Factors: 1 in = 2.54 cm (exact); 1 mi = 1,609.344 m (international mile); 1 yd = 0.9144 m.
Pro Tip
The inch is defined as exactly 2.54 cm, so conversions between metric and US customary length are exact—no approximation for that step.
Quick unit conversion table (reference values)
| Meters (m) | Feet (ft) | Inches (in) | Kilometers (km) | Miles (mi) |
|---|---|---|---|---|
| 1 | 3.28084 | 39.3701 | 0.001 | 0.000621371 |
| 3 | 9.84252 | 118.110 | 0.003 | 0.00186411 |
| 10 | 32.8084 | 393.701 | 0.01 | 0.00621371 |
| 100 | 328.084 | 3937.01 | 0.1 | 0.0621371 |
| 1609.344 | 5280 | 63360 | 1.60934 | 1 |
How to Use the Length Converter
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Read the grid
All other units update live so you can copy the value you need for plans, travel, or schoolwork.
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Use the comparison hint
The size comparison line relates your length to everyday objects for intuition.
Length systems & how to convert
Metric lengths use powers of ten (mm, cm, m, km), which makes scaling and prefixes consistent. US customary and imperial units (inch, foot, yard, mile) are still common in the United States and the UK for road signs, construction, and everyday measure.
How to convert meters to feet: multiply the length in meters by 3.280839895 to get feet. For example, 2 m × 3.28084 ≈ 6.5617 ft. Going the other way, divide feet by 3.280839895 (or multiply feet by 0.3048) to get meters, because one international foot is defined as exactly 0.3048 meters.
How to convert meters to inches: one inch equals exactly 0.0254 meters, so meters ÷ 0.0254 gives inches (or meters × 39.3700787). Yards are 3 feet (0.9144 m); miles are 5,280 feet (1,609.344 m for the international mile).
Frequently Asked Questions
Multiply meters by 3.280839895 to obtain feet. To convert feet to meters, multiply feet by 0.3048 (or divide feet by 3.280839895). Our converter applies these factors automatically for any value.
Exactly 2.54 centimeters per inch by definition. That is why inch–centimeter conversions are exact.
Historically many systems evolved locally. The metric system is the global scientific standard; the US still uses customary units in many everyday contexts, though science and medicine often use metric.