Squarecut is a feet-inch-fraction calculator for iPhone and iPad. Type a measurement the way you write it, every length stays an exact fraction, and the answer is one you can cut to.
Need help, found a bug, or want a feature? Email leonfigueira@gmail.com, or use Send feedback in the app's Settings, and you will get a reply from the person who wrote it.
12 Feet 6 Inch
gives 12' 6".3 - 1 / 2 Inch gives 3-1/2". Without it, 31/2" is fifteen and a half inches, and the app
will happily believe you.What does the ≈ mean? The exact answer does not fit the fraction you are working in. 1' divided by 7 is not a sixteenth of anything, so the app shows the nearest sixteenth and marks it, instead of quietly rounding. Change the fraction with the pill above the display, or in Settings, and every number on the tape re-renders to match.
Why does 12' times 10' come out in square feet? Because it is an area. A length times a length is an area, three lengths are a volume (shown with cubic yards alongside, for concrete), and the app will refuse to add an area to a length rather than give you a number that means nothing.
How does the percent key work? After plus or minus it takes a share of the
running total: 468 sq ft + 10 % = adds a ten percent waste factor and gives 514.8 sq ft.
After times or divide it is a plain factor, as on any calculator.
How do I check that a slab or a deck is square? Measure the two sides and work out the diagonal, which needs a square root. Multiply each side by itself and press = for each, then add the two areas: press +, tap the first area's row on the tape, and press =. Now press √. For a 10' 6" by 14' 3" slab that gives ≈17' 8-7/16"; measure that corner to corner and the layout is square. The root of an area is a length, and the root of a plain number is a plain number. A length on its own has no square root, and the app says so rather than inventing one.
The display shows a number I did not type. You tapped a tape row, or sent a solver result to the calculator. That value is now the entry; press C to take it back without losing the sum you were in the middle of.
What is C and what is AC? The same key. It reads C while there is something to clear, the entry or a refused keystroke, and AC when the next press would clear the whole sum. The tape is never touched by either; Clear tape is separate and asks first.
Is there a subscription? No, and there never will be. The calculator, the tape, every unit and every fraction are free and do not expire. The four solvers, stairs, roof, board feet and layout, unlock together for a single payment that covers every device signed in with your Apple Account.
How does the free trial work? Tap Start 21-day free trial on the Solvers tab. It goes through the App Store like a purchase, but the price is zero and nothing is charged, then or later. All four solvers work for 21 days from that moment, counted by Apple, so the trial follows your Apple Account and survives a reinstall. When it ends the solvers lock again and you can buy them once, or not at all. The calculator is never affected.
Squarecut is new. If a number is wrong, a value goes missing, or a key is hard to hit with a glove on, Settings, then Send feedback, reaches the person who wrote the app, with the details needed to reproduce it already filled in.
I paid but the solvers are locked. Settings, then Restore a previous purchase. Make sure you are signed in with the Apple Account you bought them on. Buying and restoring need a connection once; everything else works with no signal.
What do the solvers assume? Stairs uses the fewest risers that keep each one at or under your maximum, and warns when a riser or tread falls outside the usual residential limits. Stairs also gives the stringer line length, from the foot of the flight to the top, rise to run, which decides whether a 14 foot or a 16 foot 2x12 is bought; add for the plumb and level cuts at each end. Roof gives the rafter line length to the center of the ridge: deduct half the ridge and add your tail before you cut. Board feet works on nominal size, so enter 2 x 6 for a 2x6. Layout counts both ends and reports the short last bay.
Does it work with a keyboard on iPad? Digits, plus, minus, times, slash for a fraction, the apostrophe for feet, the quote mark for inches, m for millimeters, Return for equals Escape to clear and r for a square root. A hyphen straight after a digit is the fraction separator; anywhere else it subtracts.
Squarecut works with VoiceOver: measurements are read as words ("twelve feet six inches"), the answer is announced when you press equals, and a refused key says so. Type follows the Larger Text setting, and the keys stay at least 44 points tall on every iPhone. If something is hard to read or hard to reach, please email. That is a bug worth fixing.
Squarecut collects nothing. See the Squarecut privacy policy.
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Squarecut is made by Leon Nelio Figueira. Last updated 7 September 2026.