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EspañolFeet and inches calculator
Add and subtract lengths in feet, inches and fractions (like 5' 7 3/8"), multiply or divide them, and convert to inches, centimeters and meters.
Feet and inches math
Everything happens on your device: nothing is uploaded to the internet.
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Feet and inches calculator: what it is for
Enter two lengths in feet, inches and fractions of an inch and choose an operation. The calculator adds, subtracts, multiplies or divides them and shows the result in feet and inches rounded to 1/16 inch, in total inches, in centimeters and in meters.
Handy for carpentry, sewing, room measurements and any project with a tape measure.
How to use
- Enter the first length.
- Choose the operation and the second length or number.
- Read the result in feet, inches and cm.
When to use it
- Cutting lumber and trim.
- Measuring rooms and furniture.
- Converting heights to centimeters.
Frequently asked questions
How do I add feet and inches?
Add feet to feet and inches to inches, then carry every 12 inches over as one foot. 5' 8" + 3' 7" = 8' 15" = 9' 3".
How do I enter fractions?
Type them after the inches, like 7 3/8. The result is rounded to the nearest 1/16 inch, the precision of a common tape measure.
How many centimeters is a foot?
Exactly 30.48 cm. An inch is exactly 2.54 cm.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.