Common length conversion factors
Length conversion works by expressing both units through a shared base. Toolmera uses meters internally for the supported length units, then converts the result into the unit you choose.
Several widely used relationships are exact definitions, including 1 inch = 2.54 centimeters and 1 foot = 0.3048 meters. Toolmera displays results rounded to a maximum of six decimal places.
1 inch2.54 cm
1 foot0.3048 m
1 yard0.9144 m
1 mile1.609344 km
1 kilometer1000 m
Metric vs. imperial length units
Metric length units scale in powers of ten: millimeters, centimeters, meters and kilometers. Feet, inches, yards and miles use different fixed relationships, so a converter is useful when switching between engineering, travel, construction or everyday measurement systems.
Use the quick-pair buttons for common conversions such as inches to centimeters, feet to meters, miles to kilometers and yards to meters.