Free · Length conversions
Feet, Inches & Metric Length Conversion Calculator
Convert feet, inches & metric length with editable results and an explained example.
- Formula & worked example
- Private in your browser
- No signup
Calculator inputs
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How to use this calculator
- Enter the known values in the units shown. Results update as you type.
- Edit a calculated value to solve backwards, or lock a value to hold it fixed.
- Use the worked example to check the method. Reset restores the starting fields.
Private by default
Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.
Formula and method
1 foot = 12 inches = 0.3048 meters. An international foot contains twelve international inches. The metric conversion is exact before display rounding.
1 foot = 12 inches = 0.3048 meters
Worked example
Enter these known values and leave the other values blank.
- Feet
- 1 ft
- Inch
- 12 in
- Other
- 0.3048 m
Assumptions and limitations
- An international foot contains twelve international inches. The metric conversion is exact before display rounding.
- A unit change preserves the quantity. Select the desired unit before entering a new measurement.
Common questions
Which length definition does this tool use?
An international foot contains twelve international inches. The metric conversion is exact before display rounding.
Can I solve the conversion in reverse?
Enter the known quantity in its selected unit and leave the unknown quantity blank. Results retain extra precision internally and are rounded for display.
References
The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.
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