SiteCalc: Construction Tools
Concrete, Feet-Inch Calculator
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Add 16′ 6-1/2″ to 3′ 7-3/4″ and read the answer three ways at once: feet-inch, decimal inches and millimetres. Count the concrete bags, lay out the stringer, order the shingles, and tap any number to see exactly how it was worked out.
A construction calculator for carpenters, contractors and serious DIYers who measure in feet, inches and fractions, or in millimetres, and need the number to be right the first time.
A REAL JOBSITE CALCULATOR
• The keypad works like the calculator in your tool pouch: 9-5/8″, 10′ 3.5″, 5 ft 14 in, 2400 mm — mix formats as you go
• Pitch, rise, run and diagonal: enter any two and read the rest
• Hip, valley and jack rafters, stairs, rake walls, circles, arcs, columns and compound miters straight from the keypad
• Studs, blocks, footings, drywall sheets and board feet, priced from your unit cost
• Memory registers, degree-minute-second angles and a paperless tape of your last entries
• Results snap to 1/16 (or anything from 1/2 to 1/64) and show the rounding error when they do
• Every length in feet-inch, decimal inches and millimetres; switch to metric and the whole app follows
SIX TOOLS, ONE APP
• Feet-Inch: a running paper tape, divide a span into equal marks, space balusters or joists evenly
• Concrete: slabs, footings, columns, tubes and steps in cubic yards or metres; bags by brand yield, truck loads rounded up, waste included
• Framing: studs, plates and headers; joists; common, hip, valley and irregular rafters with the birdsmouth worked out; jack rafter lists; rake walls
• Stairs: risers, treads, both stringer lengths clearly labelled, the first-riser cut, a running-measurement table, and the code limits right beside the results
• Roof: pitch in x/12, degrees or percent; area, squares, shingles, ridge cap, underlayment, tiles and sheets
• Convert: exact factors for length, area, volume, mass and density
EVERY NUMBER SHOWS ITS WORK
Tap "How it's calculated" on any result to see the formula with your numbers in it, the convention it used and where that convention comes from: IRC, Approved Document K, NCC and manufacturer data sheets. Defaults for the US, UK and Australia are built in, and every one of them can be changed.
JOBS AND MATERIAL LISTS
Keep calculations in jobs, total the materials for a whole job and share a PDF material list with the yard or the client. Every calculation lands on the tape, so you can search it, reopen it and send a result straight into another tool.
MADE FOR THE SITE, NOT THE CLOUD
No account, no ads, no signal needed. Your jobs and calculations stay on your phone, and you can back them up to a file whenever you like.
Reference only. Verify against your local code and supplier before cutting or ordering.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and improvements.
The developer, Ho Van Dai, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ho Van Dai
- Size
- 12.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SiteCalc Premium Monthly $1.99
- SiteCalc Premium Yearly $19.99
- SiteCalc Premium Lifetime $39.99
- Copyright
- © DHs 2026