Handyman Calculator: Concrete
Feet, inches & fractions
Free · Designed for iPad. Not verified for macOS.
Add and subtract feet, inches and fractions without converting to decimals. Then estimate concrete, pavers, drywall, decking, stairs and cut lists, even with no signal.
Do the arithmetic in the units you measured in.
Handyman Calc adds and subtracts feet, inches and fractions directly, so you never have to turn 9' 1 3/4" into a decimal and back. Type it the way you read it off the tape.
12' 4 3/8" + 7' 9 1/2" = 20' 1 7/8"
Every answer is also shown in decimal inches, decimal feet and metric, because the person cutting works in one and the person ordering in another.
THE CALCULATOR
• Feet, inches and fractions, added, subtracted, multiplied and divided
• Type decimals and millimetres too: 12.25 ft, 3.5 in and 300 mm all work
• Multiply two lengths for square feet, and three for cubic feet and yards
• Divide a run into equal parts and get an exact fraction back, not a rounded decimal
• Divide by a measurement to count instead: 20' divided by 16" answers 15
• Round to 1/8, 1/16, 1/32 or 1/64 — your choice in Settings
• Memory keys, and a tap on ft or in converts the answer on screen
• Send a keypad answer to any calculator in one tap
SIXTEEN CALCULATORS
• Concrete — slabs, footings and round piers, in yards and in 60 lb or 80 lb bags
• Tile and flooring — tiles, boxes and spares
• Paint — gallons and quarts, after doors and windows are deducted
• Drywall — sheets, tape, joint compound and screws for a room and its ceiling
• Decking — boards, joists and screws or hidden clips, with long rows joined on a joist
• Gravel, mulch and soil — cubic yards, tons and bags for a bed, square or round
• Pavers and patio — pavers counted with their joints, base gravel, bedding sand and edge restraint
• Cut list — a plan for every board and offcut, allowing for the saw kerf, that searches for the fewest boards
• Board feet — lumber volume and cost
• Roofing — squares and bundles, adjusted for pitch
• Fence — posts, sections, rails and pickets
• Stairs — risers, treads, stringer length and every mark to cut
• Squaring — the diagonal to pull, and how far out of square you are
• Rafters — any two of rise, run, pitch and diagonal give the rest, with cut angles
• Spacing — balusters with every gap under 4", and layout marks at 16" or 24" on center
• Circles and arcs — circumference and area, and an arch's radius from its width and height
SHOW THE MATH, SHARE THE ESTIMATE
• Show the math on any result: every step, in your own numbers
• Share an estimate as text to a supplier, a client or yourself
• Add what you pay per bag, box, sheet, board or yard for an estimated cost
• Add to job: keep the slab, the fence and the steps together with one total, and share the job as text or a PDF
• Each job adds up its shopping list, ready to copy to a supplier
SAVED AND RECENT
Save the numbers you use over and over — "standard garage slab", "6 ft privacy fence" — and one tap on the chip above the form fills every box in again. Everything you work out is also kept in a list you can scroll back through. Both stay on your phone: no account, no sign-in, nothing uploaded.
WHY THE NUMBERS ARE EXACT
Most calculators work in decimals and round at the end. Handyman Calc keeps every measurement as an exact fraction and rounds once, when it shows you the answer. Round a stair riser first and stack seven treads, and the top one sits a sixteenth proud of the floor; carried exactly, the last mark lands on the floor. Material counts round up, because you cannot buy 6.2 boxes of tile.
The stair calculator also says when a flight falls outside the IRC limits — 7 3/4" maximum riser, 10" minimum tread.
Handyman Calc is free and supported by ads. Every key and every calculator works without paying — nothing is locked behind a purchase or a subscription.
Not affiliated with, or endorsed by, any tool or building-materials manufacturer.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Spanish now shows on the App Store. The app has spoken Spanish since launch; this update lets your iPhone know it, so the language setting can offer it.
The developer, Illumination Development, L.L.C., 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Contact Info
- User Content
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Illumination Development, L.L.C.
- Size
- 47 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Illumination Development