RoofPitch: Rafter Calculator
Measure a roof pitch, then get rafter cut lengths, hip and valley, roof area and the shingle bundles to order. Save every roof and export a PDF cut sheet.
Download on theApp StoreTurn rise and run into pitch, angle and rafter length, on the roof, without the trig.
RoofPitch is a fast, no-nonsense roof calculator for framers, roofers, and anyone re-roofing their own house. Enter a slope any way you have it, and read back every other form of it right away.
What It Does
- Pitch from rise and run, in the same unit, either measurement system.
- Every form of the slope at once: x-in-12 pitch, angle in degrees, and percent grade.
- Common rafter length from your span and pitch, with ridge shortening and the overhang tail worked in.
- Hip and valley rafter lengths, using the correct 45 degree plan diagonal, plus the hip angle.
- Roof area, roofing squares, and the shingle bundles to order, with your own waste allowance.
- A live cross-section that gets steeper as the pitch does, so the picture always matches the numbers.
- Metric or imperial throughout: feet and inches, or metres and centimetres.
Save Every Roof
Save each roof you measure to your Jobs library. Reopen it any time, edit the sizes, and see a chart across every roof you have on file. Nothing leaves your iPhone.
Free and Pro
Pitch and angle are free, forever. The one-time Pro unlock adds rafter lengths, roof area and the material estimate, and lets you export. Lifetime is a one-time purchase that Apple charges once. If you bought it before, use Restore Purchases to recover access on the same Apple Account.
Pro Export
Export a per-roof PDF cut sheet with the pitch, rafters, area and materials, and a CSV of your whole library, straight from the share sheet.
Private by Design
No account, no cloud, no tracking. Every roof you enter stays on your device.
RoofPitch is a calculator and estimating aid. Check local codes and material coverage before you cut or order.
More in this category
RoofPitch: Rafter Calculator does one job well, works offline, and keeps your data on this device. There is no cloud sync, no account, and nothing to sign up for.
Who it is for
RoofPitch: Rafter Calculator is for anyone who wants a dependable way to handle this without a spreadsheet or a complicated setup. It sits in the Utilities category on the App Store.
Private by design
No ads, no trackers, no data harvesting, and no cloud sync. Your entries stay on this device and never pass through our servers. There is a Delete All My Data control, so you stay in charge.
Common questions
What is RoofPitch: Rafter Calculator?
Measure a roof pitch, then get rafter cut lengths, hip and valley, roof area and the shingle bundles to order. Save every roof and export a PDF cut sheet.
Is RoofPitch: Rafter Calculator on the App Store?
Yes. It is available now on the App Store.
Does RoofPitch: Rafter Calculator work offline?
Yes. Everything runs on your device, so it works with no signal.
Does RoofPitch: Rafter Calculator work on iPad?
Yes. It is a universal app and runs natively on iPhone and iPad.
Does RoofPitch: Rafter Calculator include in-app purchases?
Some advanced features require an in-app purchase. The App Store shows the current choices, prices, and terms for your storefront before you confirm anything.
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