Sawhorse: Feet Inch Calculator
Rafter Stair Roof Pitch Tools
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Sawhorse is a construction calculator that works the way you measure: feet, inches and fractions, straight off the tape. No subscription, no trial, and no card needed to use it.
Type 12 ft 6 in 3/8, add 2 ft 4, multiply by 3, and read the answer as feet-inches, inches, decimal feet, yards or metric. Feet times feet gives square feet. Three lengths give cubic yards. A running tape keeps every line so you can check your work or reuse an answer. Big keys, a backspace key, and no clutter, built for gloves and sun glare.
Seven trade tools use the same keypad:
Stairs: risers, riser height, treads, total run, stringer length and angle from the floor-to-floor rise, with code defaults you can change.
Rafters: common, hip and valley line lengths with the ridge deducted, overhang added, jack rafter difference, plumb and seat cut angles.
Roof pitch: convert between rise per 12, degrees and rise over run, with pitch and hip factors.
Concrete: cubic yards and 40, 60 or 80 lb bag counts for slabs, footings and round columns, with waste.
Board feet: lumber volume and cost by the piece.
Studs: count at 12, 16 or 24 inches on center, plus plates.
Area and volume: rooms, slabs and fill, with perimeter for trim.
Answers round to the fraction you choose, 1/8 through 1/64, while the math underneath stays exact.
Sawhorse works offline with no account and no sign-in. It only sends anonymous usage counts, never anything you type.
The calculator and all seven tools are free. Sawhorse Pro is a single purchase, not a subscription, that unlocks sharing any tape or tool sheet as text or a PDF. Buy it once and it is yours on every iPhone and iPad signed into your Apple account.
Ratings & Reviews
Polished for iPhone Duo, plus small fixes.
The developer, Joseph Rodriguez, 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
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Joseph Rodriguez
- Size
- 1.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 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
- Sawhorse Pro $19.99
- Copyright
- © 2026 0ARCH
