FREE ONLINE CALCULATOR
Length Converter
Convert common metric and imperial length units instantly.
Enter your values, then press the button below:
Enter a value and choose units.
Supported length units
SizeKit supports millimeters, centimeters, meters, kilometers, inches, feet, and miles for common everyday conversions.
Common length conversions
1 inch = 2.54 centimeters. 1 foot = 30.48 centimeters. 1 meter = 3.28084 feet. 1 mile = 1.609344 kilometers.
Using length for photo sizes
Passport and ID photos are often listed in millimeters or inches, for example 35 × 45 mm or 2 × 2 inches. Convert the size here, then use our photo resizer to set the pixel dimensions and file size your form needs.
Frequently asked questions
How many centimeters are in an inch?
There are exactly 2.54 centimeters in one inch.
How many feet are in a meter?
One meter is about 3.28084 feet.
Can I swap the units quickly?
Yes. Use the Swap units button to reverse the From and To units.