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Need to convert inches to cm, feet to meters, or miles to kilometers without doing the math by hand? This free Length Conversion Calculator helps you switch between common metric and imperial units in seconds.
It works well for everyday tasks like travel planning, schoolwork, DIY projects, product dimensions, and general measurement checks. Enter a value, choose your starting unit, choose the unit you want, and get the result instantly.
Supported units include nanometers, micrometers, millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and light years.
Common length conversions
People usually come here for a few specific jobs. The most common ones are:
- Inches to centimeters
- Centimeters to inches
- Feet to meters
- Meters to feet
- Miles to kilometers
- Kilometers to miles
- Yards to meters
- Millimeters to inches
If your goal is quick everyday conversion, start with one of those.
Quick reference examples
- 1 inch = 2.54 cm
- 1 foot = 0.3048 meters
- 1 yard = 0.9144 meters
- 1 mile = 1.60934 km
- 1 km = 0.621371 miles
- 1 meter = 100 cm
These quick references are helpful, but the calculator is easier when you need exact values or less common unit combinations.
How to use the length converter
- Enter the number you want to convert.
- Select the starting unit.
- Select the target unit.
- Click Convert to get the result instantly.
This works for both simple everyday conversions and more technical measurement checks.
When this calculator is useful
- Travel — miles to kilometers, kilometers to miles
- DIY and home projects — inches, feet, centimeters, and meters
- Schoolwork — metric and imperial measurement exercises
- Shopping and product dimensions — checking sizes across different unit systems
- Technical or engineering context — quick unit verification without manual conversion
FAQ
How do I convert inches to centimeters?
Use the calculator by entering your value in inches and choosing centimeters as the target unit. If you only need the base conversion, 1 inch = 2.54 cm.
How do I convert feet to meters?
Enter the value in feet, then choose meters in the output field. The standard conversion is 1 foot = 0.3048 meters.
How many kilometers are in a mile?
1 mile = 1.60934 kilometers. Use the calculator if you want the exact conversion for a longer distance.
Can I convert both metric and imperial units?
Yes. The calculator supports both metric and imperial units, including centimeters, meters, kilometers, inches, feet, yards, and miles.
Is this calculator useful for travel and DIY projects?
Yes. It is especially useful for road distances, room or furniture dimensions, packaging sizes, schoolwork, and general measurement checks.
Does this converter support very small and very large units?
Yes. It includes very small units like nanometers and micrometers, and very large units like miles and light years.