Construction Calculator °

Construction Calculator ° — fast, accurate building math for the job site.

Type a measurement the way you'd say it — 12' 6 1/2", 150, or 6 1/2 — and the answer appears instantly at the top of the screen. No Calculate button, no converting by hand. Results are rounded to the nearest 1/16", just like a tape measure.

FREE CALCULATORS
• Running Measurements — marks at a set spacing from any starting point
• Equal Spacing — divide any length into equal spaces, with every mark listed
• Check Square — the diagonal your layout should have, and how far out it is
• Right Triangle — find the missing side from any two sides, plus angles and pitch
• Pitch — pitch, angle, slope and sloped length from rise and run
• Unit Converter — feet and inches to metric and back, with a 1/16" fractions table

PRO CALCULATORS (subscription)
• Stair Calculator — riser height, tread depth, stringer length and angle, with warnings when stairs fall outside common code limits
• Concrete Calculator — slabs, footings and round columns, with waste allowance and 60 lb / 80 lb bag counts
• Baluster Spacing — fewest balusters that keep every gap under your maximum, and the position of each one
• Rake Wall — top plate length, pitch, and the length of every stud

BUILT FOR WORK
• Smart measurement keys: ft, in, fraction and space above the number pad
• Shows how it read each entry, so typing mistakes are easy to spot
• Speak: tap to hear results read aloud
• Save results to History, search them later, or share them with your crew
• Dark mode and large text support

WHO IT'S FOR
Contractors, carpenters, framers, deck builders and DIYers who want quick, reliable numbers without a pencil and scrap of plywood.

Results are a planning aid. Always confirm measurements on site and check your local building code.

SUBSCRIPTION
Pro is available as a monthly or yearly auto-renewing subscription. Prices are shown in the app in your local currency. Payment is charged to your Apple Account when you confirm the purchase. The subscription renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel anytime in your device Settings › your name › Subscriptions.

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