# Rafter Help

> Roof Pitch + Length Calculator

Canonical page: [https://chrome-stats.com/d/id1006188060](https://chrome-stats.com/d/id1006188060)

## Overview

- **ID:** `id1006188060`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Armchair Engineering
- **Category:** Utilities
- **Rating:** 4.50 / 5 (213 ratings)
- **Version:** 1.5.2
- **Last updated:** 2019-11-08
- **First published:** 2015-06-25
- **Size:** 5.57 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/rafter-help/id1006188060)
- **Website:** [https://armchairengineering.com](https://armchairengineering.com/)
- **Privacy policy:** [https://armchairengineering.com/privacy](https://armchairengineering.com/privacy)

## Description

Rafter Help makes it easy to calculate rafter lengths and related values for roof framing. Quickly determine roof pitch, rafter lengths, and ridge height for gable roofs based on room and ridge width.

The Advanced tab provides extra control. Enter pitch in radians, decimal degrees, degrees-minutes-seconds (DMS), or rise/run (e.g., 8/12). Enter lengths in mm, cm, inches, or feet, and choose your decimal precision.

## Rankings

- #103,198 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1006188060)