How it works
Formulas apply standard published equations or fee schedules in client-side JavaScript — not personalized medical or tax advice.
Formula
Pitch angle = arctan(rise ÷ run); percent slope = (rise ÷ run) × 100.
How to use Roof Pitch Calculator
- Enter measurements or body stats in the units shown (toggle ft/in vs metric if available).
- Select presets such as activity level, fee tier, or coat count.
- Submit or live-update to refresh results.
- Write down outputs with a margin buffer for waste, taxes, or medical variance.
Worked examples
Concrete numbers and cases you can check against the tool above.
4:12 pitch
Rise 4 over run 12 ≈ 18.4° — check against metal roof minimum slope specs.
When to use Roof Pitch Calculator
Roofers and DIYers speak in pitch language; degrees help with safety harness and material slope limits.
Common use cases
- Check if metal roofing minimum pitch is met.
- Convert blueprint pitch notation to degrees.
- Estimate roof surface area multiplier from pitch.
Inputs and outputs
- Feet, inches, pounds, or metric equivalents
- Numeric results with units
Privacy
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
Frequently asked questions
- Is this medical or tax advice?
- No. Due dates, TDEE, and paycheck outputs are estimates; consult clinicians, IRS guidance, or payroll for official figures.
- Do marketplace fees change?
- Platforms update fee tables; treat results as planning approximations and verify on seller dashboards.
- Should I add waste factor?
- Yes for concrete, tile, and mulch — many pros add 5–10% beyond raw calculator output.