Feet-Inch Calculator.
Add, subtract, multiply and divide in feet, inches and fractions.
Click the keypad or type: digits, + − * /, ′ for feet, ″ for inches, Enter for =, Backspace, Esc to clear.
Finished operations appear here.
- Press Ft or In after a number to make it a length:
1 2 Ft 6 Inis 12′ 6″. - Fractions: type the numerator, /, the denominator, then In:
3 / 4 Inis 3/4″. - With + and − a bare number is inches. With × and ÷ it is a plain multiplier.
- Length × length gives square feet, and × length again gives cubic yards.
- Equals twice repeats the last operation. Backspace walks back through an operator.
How to use it
- Press Ft or In after a number to make it a length: 1 2 Ft 6 In is 12' 6".
- For a fraction, type the numerator, press /, type the denominator, then press In: 3 / 4 In is 3/4".
- With + and −, a bare number counts as inches. With × and ÷, it is a plain multiplier.
- Length × length gives square feet, and multiplying by a length again gives cubic yards.
- Pressing = again repeats the last operation. Backspace walks back through an operator. Use the Round to menu to change the fraction precision.
Example
12' 6" + 3" = 12' 9". 10' × 10' = 100.00 sq ft. 3/4" + 1/4" = 1".
Source and notes
- You can type on your keyboard as well as click: digits, + − * /, ' for feet, " for inches, Enter for =, Backspace and Esc.
- A finished-operations tape keeps the last few calculations on screen.
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