# Roof Pitch Calculator

> Roof Pitch Calculator (iPhone/iPad app by Hugo Lamarre.)

- Source: https://appshunter.io/ios/app/roof-pitch-calculator/id6760628158 (this page in markdown: same URL + `.md`)
- Developer: [Hugo Lamarre](https://appshunter.io/developer/1659517008)
- Category: Utilities
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: English
- Released: 2026-03-25
- Data updated: 2026-07-09
- User reviews in markdown: https://appshunter.io/ios/app/roof-pitch-calculator/id6760628158/reviews.md

## What is Roof Pitch Calculator?

Roof Pitch Calculator is a fast, professional tool for roofers, carpenters, framers, builders, and DIYers. Enter any two values — rise, run, or roof angle — and instantly calculate roof pitch, slope percentage, rafter length, and roof dimensions.

No internet required.
No ads.
No subscriptions.
Just results.

DESIGNED FOR THE JOBSITE

Large touch targets work with gloved hands. The one-screen layout means no digging through tabs or menus.
Enter measurements exactly how you read them from a tape measure, including fractional inches like 7 3/8 or 5 1/2.
Results display in carpenter-friendly pitch ratios such as 5 3/4 : 12.

PITCH CHEAT SHEET

Quick reference table of common roof pitches including:
• Roof angle
• Slope percentage
• Rafter multiplier
Perfect for rafter layout, framing calculations, and quick roof pitch checks.

US AND CANADA BUILDING CODES

Toggle between United States and Canadian building codes:
• IRC 2024
• IBC 2024
• NBC 2020 Part 9
• NBC 2020 Part 5

The app automatically adjusts code references, roofing materials, and minimum pitch requirements based on your selection.

ROOFING MATERIAL COMPLIANCE

Select a roofing material and the app warns you if your roof pitch falls below the minimum code requirement.

Supported materials include:

• Asphalt shingles
• Standing seam metal
• Exposed fastener metal
• Clay and concrete tile
• Wood shakes
• Slate
• Built-up roofing

Commercial mode also includes:

• TPO
• EPDM
• PVC membranes

Material notes explain special requirements such as underlayment rules for low-slope asphalt shingles.

PITCH, DIMENSIONS, AND MATERIALS — ALL ON ONE SCREEN

• Enter rise + run, rise + angle, or run + angle
• Preset buttons for common pitches from 2:12 through 12:12
• Sliders for quick visual adjustment
• Span and rafter length auto-calculate from pitch
• Animated roof diagram updates in real time

Flat roofs (0:12) are supported.

MATERIAL ESTIMATES (GABLE ROOF)

When pitch and building dimensions are entered the app calculates:

• Total roof area
• Roofing squares
• Bundle count
• Waste allowance
• Total bundles required

Settings for bundles per square and waste percentage are saved between sessions, making repeat estimates faster.

MEASURE ROOF ANGLE WITH YOUR PHONE

Use the built-in device level as a roof angle finder.
Place your phone on a rafter or roofline and capture the angle directly into the calculator.

IMPERIAL AND METRIC

Switch between feet and inches or metric units at any time.
Fractional inch input allows measurements like 7 3/8 or 5 1/2. Internal calculations always maintain full precision.

SAVE, COPY, AND REVIEW

• Copy all results to your clipboard in one tap
• Save calculations with custom titles
• History stores up to 50 calculations

Restore any saved calculation instantly, including unit system, building code, and material settings.

RESULTS AT A GLANCE

• Roof pitch ratio
• Roof angle in degrees
• Slope percentage
• Rafter factor and multiplier
• Rafter length
• Roof height

Everything needed for roof framing, estimating, and planning.

PRIVACY FIRST

Roof Pitch Calculator works 100% offline.

No analytics
No tracking
No accounts
No data collection
Your calculations stay on your device.

BUILT FOR PROFESSIONALS

Whether you are estimating roofing materials, checking pitch during framing, reviewing building plans, or measuring a roof on-site, Roof Pitch Calculator gives you fast answers without unnecessary complexity.

DISCLAIMER
For estimation and reference only. Estimates assume a symmetrical gable roof. Always verify measurements, material quantities, and building code requirements before construction.


## Version history (last 1 release)

### 1.0 — 2026-03-25

No release notes.

## More apps by Hugo Lamarre

- [Pipe Slope Calculator](https://appshunter.io/ios/app/pipe-slope-calculator/id6760373343)
- [Conduit Fill Calc](https://appshunter.io/ios/app/conduit-fill-calc/id6760679130)
- [Before After Photo - SiteProof](https://appshunter.io/ios/app/before-after-photo-siteproof/id6761348411)
- [ScopeProof: Change Orders](https://appshunter.io/ios/app/scopeproof-change-orders/id6761591086)

All apps by Hugo Lamarre: https://appshunter.io/developer/1659517008

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-09.*