Inch Converter
Compare a measurement in the units used by your drawing, tape measure or supplier. Choose a direction and enter the measured length; the result changes units, not the physical length. International customary measures are used; survey and mixed feet/inches measurements need a different workflow.
Scope and assumptions
SI metric units and international inch=0.0254m, foot=0.3048m, yard=0.9144m, mile=1609.344m. Scalar lengths only: no survey-foot, nautical-mile, mixed feet/inches, astronomical distance or geometric measurement claim.
Only the directions listed below are supported. Switching units retains your entered amount and validates it against the new direction.
Millimeters = Inches × 25.4.
Open selected native calculatorKeep and compare a scenario
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Worked example
For example, 1 in is 25.4 mm. Choose the units your own measurement uses.
Available directions
- mm → in
- cm → in
- dm → in
- m → in
- km → in
- in → mm
- in → cm
- in → dm
- in → m
- in → km
- in → ft
- in → yd
- in → mi
- ft → in
- yd → in
- mi → in