Length Converter
Convert between length units
About the Calculator
Length conversions show up in travel, construction, fitness, and everyday tasks. This converter helps you switch between metric and imperial units quickly and accurately. Use it when a measurement is listed in centimeters but you need inches, or when a run is in miles and you want kilometers. Enter a value, choose the units, and get a reliable result instantly. It is a simple way to avoid mistakes when plans, materials, or maps use a different system. When the numbers match your units, the rest of the job is much easier. Use the Length Converter to get a clear result you can act on right away.
100 Centimeters
39.370079 in
Inches
Formula Table
| From | To | Formula |
|---|---|---|
| Millimeters | Centimeters | value × 0.1 |
| Millimeters | Meters | value × 0.001 |
| Millimeters | Kilometers | value × 0.000001 |
| Millimeters | Inches | value × 0.03937 |
| Millimeters | Feet | value × 0.003281 |
| Millimeters | Yards | value × 0.001094 |
| Millimeters | Miles | value × 0.000001 |
| Centimeters | Millimeters | value × 10 |
| Centimeters | Meters | value × 0.01 |
| Centimeters | Kilometers | value × 0.00001 |
| Centimeters | Inches | value × 0.393701 |
| Centimeters | Feet | value × 0.032808 |
| Centimeters | Yards | value × 0.010936 |
| Centimeters | Miles | value × 0.000006 |
| Meters | Millimeters | value × 1,000 |
| Meters | Centimeters | value × 100 |
| Meters | Kilometers | value × 0.001 |
| Meters | Inches | value × 39.370079 |
| Meters | Feet | value × 3.28084 |
| Meters | Yards | value × 1.093613 |
| Meters | Miles | value × 0.000621 |
| Kilometers | Millimeters | value × 1,000,000 |
| Kilometers | Centimeters | value × 100,000 |
| Kilometers | Meters | value × 1,000 |
| Kilometers | Inches | value × 39,370.07874 |
| Kilometers | Feet | value × 3,280.839895 |
| Kilometers | Yards | value × 1,093.613298 |
| Kilometers | Miles | value × 0.621371 |
| Inches | Millimeters | value × 25.4 |
| Inches | Centimeters | value × 2.54 |
| Inches | Meters | value × 0.0254 |
| Inches | Kilometers | value × 0.000025 |
| Inches | Feet | value × 0.083333 |
| Inches | Yards | value × 0.027778 |
| Inches | Miles | value × 0.000016 |
| Feet | Millimeters | value × 304.8 |
| Feet | Centimeters | value × 30.48 |
| Feet | Meters | value × 0.3048 |
| Feet | Kilometers | value × 0.000305 |
| Feet | Inches | value × 12 |
| Feet | Yards | value × 0.333333 |
| Feet | Miles | value × 0.000189 |
| Yards | Millimeters | value × 914.4 |
| Yards | Centimeters | value × 91.44 |
| Yards | Meters | value × 0.9144 |
| Yards | Kilometers | value × 0.000914 |
| Yards | Inches | value × 36 |
| Yards | Feet | value × 3 |
| Yards | Miles | value × 0.000568 |
| Miles | Millimeters | value × 1,609,344 |
| Miles | Centimeters | value × 160,934.4 |
| Miles | Meters | value × 1,609.344 |
| Miles | Kilometers | value × 1.609344 |
| Miles | Inches | value × 63,360 |
| Miles | Feet | value × 5,280 |
| Miles | Yards | value × 1,760 |
Examples
Convert 100 centimeters to inches
100 cm = 39.37 inches
Convert 5 miles to kilometers
5 miles = 8.05 kilometers
Convert 6 feet to meters
6 feet = 1.83 meters
💡 Tips
- •1 inch = 2.54 cm exactly (by definition).
- •1 mile ≈ 1.6 km (multiply miles by 1.6 for quick estimate).
- •1 meter ≈ 3.28 feet (slightly more than 3 feet).
- •1 yard = 3 feet = 36 inches.
🎉 Fun Facts
- •The meter's light-speed definition: since 1983, one meter is officially defined as the distance light travels in 1/299,792,458 of a second in a vacuum, making the meter literally based on the speed of light, not a physical object.
- •The royal foot origin: the "foot" measurement comes from King Henry I of England's actual foot (reigned 1100-1135); he decreed that 1 foot = the length of his foot, establishing a wildly inconsistent standard until it was later standardized to 12 inches.
- •The metric system resistance: only three countries have not officially adopted the metric system: United States, Liberia, and Myanmar, though Myanmar announced plans to metricate, making the US increasingly isolated in using feet, inches, and miles.
- •Lightning distance trick: the "5-second rule" for lightning works because sound travels approximately 1 mile in 5 seconds (or 1 kilometer in 3 seconds); count seconds between flash and thunder, divide by 5, and you get miles away.
- •The nautical mile mystery: a nautical mile (6,076 feet) is 15% longer than a land mile (5,280 feet) because it is based on Earth's circumference; one nautical mile equals one minute of latitude (1/60th of a degree), making ocean navigation calculations simpler.