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Carpenter Square & Stair Calc

Carpenter Square & Stair Calc

Construction Framing + Level

57 ratings
4 reviews
🔧 Utilities
📊 Productivity
$1.99

Details

Released
November 6, 2017
Updated
February 10, 2026

Developer

Red Shepard
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About

This app provides three essential construction tools: a corner squaring calculator using the Pythagorean theorem, a comprehensive stair calculator with building code support, and a digital bubble level. It allows direct input from tape measures in feet, inches, and sixteenths, simplifying calculations for framing and layout.

✓Corner squaring calculator
✓Stair calculator with code support
✓Digital bubble level
✓Direct tape measure input (feet, inches, sixteenths)
✓Visual diagrams for calculations
✓Save and recall recent calculations
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What's New in Carpenter Square & Stair Calc

2.9

February 10, 2026

NEW: Full stair calculator with building code compliance! Enter floor-to-floor height → get risers, treads, stringer length & more. Tap measure in, answer out.

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User reviews

Most RecentHighest RatedLowest Rated

Update bug

I’m also having issues inputting the second measurement. It only lets me put one digit, and then it freezes. It used to work before the update.
EEslice335

Update glitch

Ever since the new update when you go to input the second measurement, it only allows a single digit under the foot so you have to convert everything to inches in order to get your square. Very annoying.
XX156788

Feet and inches

This app is a great idea and it calculates in feet and inches and in 16th . It’s perfect!
GDGreg Deel

Interior designer

I love this little app for its quick calculations and bubble leveler.... so easy to use and right on my phone. No carrying extra calculators! Also Nice feature with the family sharing…I have my whole staff using it.
J-JD -PT

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FAQ

What is Carpenter Square & Stair Calc?

Carpenter Square & Stair Calc is a utility app that combines a corner squaring calculator, a stair calculator with building code support, and a digital bubble level. It's designed for construction professionals and DIYers to simplify framing and layout tasks.

Does Carpenter Square & Stair Calc have ads?

No, Carpenter Square & Stair Calc does not contain advertisements. It is a paid application that offers an ad-free experience for its users.

What is the price of Carpenter Square & Stair Calc?

Carpenter Square & Stair Calc is available for a one-time purchase of $1.99. This price grants you access to all its features without any recurring fees or in-app purchases.

What devices does Carpenter Square & Stair Calc support?

Carpenter Square & Stair Calc is designed for Apple devices, specifically supporting iPhones and iPods. It is not currently available for Android devices.

How often is Carpenter Square & Stair Calc updated?

The app was last updated on February 10, 2026, indicating recent development activity. While specific update frequency isn't detailed, this suggests ongoing support and potential improvements.

What is the age rating for Carpenter Square & Stair Calc?

Carpenter Square & Stair Calc has an age rating of 4+. This indicates it is suitable for a wide audience, including younger users, due to its straightforward utility functions.

Can Carpenter Square & Stair Calc calculate stairs for different building codes?

Yes, the stair calculator in Carpenter Square & Stair Calc supports both Residential (8" max rise) and Commercial (7" max rise) building codes. It calculates riser and tread counts, exact riser height, and total run to code.

How does Carpenter Square & Stair Calc handle measurements?

Carpenter Square & Stair Calc allows direct input of measurements in feet, inches, and sixteenths, mirroring how contractors use tape measures. It automatically simplifies fractions and avoids the need for decimal conversions.