SiteFigure Trade Calculator
Feet-inch fractions + metric
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Handy calculator tool designed for everyday calculations. Core features work offline, no account required.
Every feature is free. A single banner ad sits at the bottom of the screen, and if you would rather not see it, one optional purchase hides it. That purchase does not unlock anything — everything is already unlocked.
SiteFigure is a pocket calculator built for carpenters, remodelers and site crews:
- Feet-inch-fraction math the way you say it: 5' 3-1/2" + 2' 7/8" — exact rational arithmetic inside, so 1/2 and 0.5 are strictly equal, no floating-point drift
- Every result in both systems, always: 7' 11-3/8" with ≈2.423 m on the same screen; tap to swap which comes first
- Metric joins the math directly: 1.2 m + 3 ft 5/8 in just works, converted exactly at 1 in = 25.4 mm
- Dimension-aware: ft × ft gives sq ft, times a thickness gives volume; mismatched units get a clear warning instead of a wrong number
- Rafter solver: enter any two of pitch (x/12, degrees or percent), span/run and rise — get rafter length plus plumb and level cut angles, with a live side-view sketch
- Stair solver: from total rise, get the step count, exact-fraction riser height, tread depth and stringer length; set your own limits and get a clear warning when a value exceeds them
- Concrete estimator: slabs, footings and columns; volume in cu yd and m³, bag counts for 60 lb / 80 lb / 40 kg bags, adjustable waste factor
- History: every calculation saved on device with no cap, tap to restore and keep working
- Fraction precision: 1/8, 1/16, 1/32, 1/64 — all free
- The math runs entirely offline, so basements and dead zones are fine. No account, no analytics; your calculations never leave the device. The only network use is loading the bottom banner, and there is no tracking and no App Tracking Transparency prompt.
All results come from public math formulas and are for reference only; double-check critical dimensions before you build.
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The developer, 丽佳 施, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
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Accessibility
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Information
- Seller
- 丽佳 施
- Size
- 4.7 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 and 2 more
- English, Japanese, Simplified Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $0.99
- Copyright
- © 2026 Jayden Chen