Construction Calculator °
Feet Inch, Stairs & Concrete
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
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.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://www.becomechad.com/main-privacy-policy
Ratings & Reviews
• New look, easier to use — answers update as you type
• Six calculators are now free, including Right Triangle, Pitch and the Unit Converter
• Fixed: plain numbers like "16" are now read correctly as inches, and fractions are kept
• Stair Calculator now gives tread depth and code warnings
• Rake Wall now gives the length of every stud
• Concrete adds round columns, waste % and bag counts
• Unit Converter now converts to and from metric
• History with search, and Clear All Data in Settings
The developer, Nikhil Kumar, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nikhil Kumar
- Size
- 1.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Construction Calculator Pro $0.99
- Construction Calculator Pro $9.99
- Copyright
- © Nikhil 2026