Roof Calculator – Pitch

AIPulssi Labs

In-app purchases

About this app

Roof Calculator is a clear, fast tool for working out roof pitch and materials. Built from the ground up for metric units and local building practice, with the correct terms throughout – not a rushed machine translation.

Enter the roof rise and span, and instantly see:
- Pitch in degrees, percent and ratio (e.g. 1:2.5)
- Slope length
- A clear cross-section drawing of your roof

The app also warns you if the pitch is too shallow for the chosen roofing material – felt, standing seam, profiled metal, tile or slate. A pitch that is too shallow can cause leaks or block the building permit, saving you from costly mistakes.

FREE:
- Pitch (degrees / % / ratio)
- Slope length
- Cross-section drawing – see your roof instantly, with measurements
- Minimum-pitch warning per material
- Gable and mono-pitch roofs
- Works offline

PRO (one-time purchase, no subscription):
- Roof area with eaves overhang
- Material quantity with waste allowance
- Batten quantity with on-center spacing
- Everything unlocks with a single one-time purchase – no monthly fee

Three languages: Finnish, Swedish and English.

Who it's for:
- Carpenters, roofers and builders on site
- Renovators and cottage owners planning a roof themselves
- Anyone who wants to understand what roof measurements actually mean

Roof Calculator works offline, so it's usable even on the roof without signal. No ads, no subscriptions.

Note: The values are indicative. Always check the roofing material's minimum pitch and quantities with the manufacturer, and permit requirements with your local building authority.

What’s new

First release. Roof pitch, area and material – see your roof instantly.