Tape Measure Calculator
Add, subtract, multiply and divide measurements the way they come off the tape — 5' 3-1/2" plus 7/16", no decimals, no converting. Type on the keypad or drag the tape to the mark. Fractions, feet-and-inches, and metric all mix.
Done with the tape math? Plan the whole sheet.
CUTLIST.io bundles all five shop calculators with the cut list optimizer — Rip First, Crosscut First, Max Yield, or Smart Stack — so you buy the right amount of material and waste less of it.
Get the whole suite of toolsTape measure math without the decimals
Most calculators want 5.4375 when your tape says 5-7/16. This one speaks tape: type 5, tap in, type 7/16, and keep going with +, −, × or ÷. The running answer shows in feet and inches, with the fraction, and the tape graphic slides to the mark so you can see it.
Feet and inches together
Type the feet, tap ft, type the inches, tap in, add the fraction. 5 ft 3 in 1/2 reads 5' 3-1/2". Tap mm or cm for metric; the tape switches to match, or tap the tape to flip it.
Edit anything, anywhere
Tap into the expression to move the cursor. Change a number, swap an operator by tapping it and pressing another, or delete one and the figures join. Parentheses work for grouped math like a frame's total length: (24 + 3/4) × 2.
Common tape fractions, as decimals
| Fraction | Decimal | mm |
|---|---|---|
| 1/16" | 0.0625 | 1.59 |
| 1/8" | 0.125 | 3.18 |
| 3/16" | 0.1875 | 4.76 |
| 1/4" | 0.25 | 6.35 |
| 3/8" | 0.375 | 9.53 |
| 1/2" | 0.5 | 12.7 |
| 5/8" | 0.625 | 15.88 |
| 3/4" | 0.75 | 19.05 |
| 7/8" | 0.875 | 22.23 |
More free shop calculators
Questions
How do I enter 3-5/8 inches?
Type 3, tap in, then type 5/8. The tape and the result show 3-5/8" right away.
Can I mix feet and inches in one calculation?
Yes. Each measurement can be feet-and-inches, plain inches, a bare fraction, or metric, and the total is shown in feet and inches with the fraction.
What does the tape do?
It's a second way to enter a measurement: drag it to the mark instead of typing, and it also shows the running total so you can see where the answer lands between the sixteenths.
Does it round?
Results are shown to the nearest 1/16" on the imperial tape (and in exact decimal underneath), so what you read is what you'd mark.