Feet to InchesFree online conversion calculator — instant results, no sign-up
Convert feet to inches and back.
About the Feet to Inches
The Feet to Inches calculator converts a length in feet to inches using the exact relationship of 12 inches per foot. It also shows the reverse relationship so you can convert inches back to feet. With the default input of 1 foot, the result is 12 inches.
- Value in feet (feet)
- Enter the length in feet that you want to convert to inches; the default value is 1.
Formula and method
i = 12 × f; reverse conversion: f = i ÷ 12.
- fLength in feet.
- iEquivalent length in inches.
Multiply the entered value in feet by 12 to obtain inches. For the reverse relationship, divide inches by 12 to obtain feet. Using the default input, 12 × 1 = 12 inches; the reverse unit relationship is 1 inch ÷ 12 = approximately 0.083333 feet.
Worked example
These are the calculator's starting values and the results it actually produces for them.
Inputs
- Value in feet1 feet
Results
- inches12
- 1 feet =12 inches
- 1 inches =0.083333 feet
How to use the Feet to Inches
- 1Locate the Value in feet (feet) input.
- 2Leave the default value of 1 to follow the worked example, or enter your length in feet.
- 3Read the inches result, calculated by multiplying the feet value by 12.
- 4Check the forward conversion row: with the default input, it shows 1 foot equals 12 inches.
- 5Use the reverse relationship row to interpret inches in feet: 1 inch is approximately 0.083333 feet.
Reading your result
The result row, “inches = 12,” gives the converted length for the default input. The forward row, “1 feet = = 12 inches,” expresses the same result as a unit equivalence. The reverse row, “1 inches = = 0.083333 feet,” gives the feet equivalent of one inch, rounded to six decimal places; it is a unit relationship, not a conversion of the 12-inch result back to feet. The duplicated equals signs in these displayed rows should be read as a single equals sign.
Limitations
The factor of 12 inches per foot is exact, but displayed decimal results may be rounded. In particular, 0.083333 feet is an approximation of 1/12 foot. Conversion does not improve the accuracy of the original measurement. The input represents feet only, not mixed feet-and-inches notation; convert any inch portion to a fraction of a foot before entering a mixed measurement.
Common questions
Why does the default input of 1 produce 12 inches?+
A foot contains exactly 12 inches, so the calculator multiplies 1 by 12.
How do I convert inches back to feet?+
Divide the inch value by 12. The reverse relationship shown here is 1 inch = approximately 0.083333 feet; the listed input field itself accepts feet.
Is 0.083333 feet exactly equal to 1 inch?+
No. One inch is exactly 1/12 foot, which has a repeating decimal expansion. The displayed value is rounded to six decimal places.
Can I enter a measurement written in feet and inches?+
The input is a single value in feet. First divide the inch portion by 12 and add it to the whole-foot portion, then enter that total.
Does the calculator save my information?+
Calculations run in your browser. While signed in, inputs and results are automatically recorded in account history; saving a result creates a separate saved record.
Further reading
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Results are estimates for informational purposes and are not financial, medical or legal advice.