Hammer CalculatorRoofing
17 of 17 calculators are live. Everything else below is on the roadmap — check back as more launch.
Calculate shingles, metal panels, underlayment, flashing, and ventilation for any roof type. From a simple re-shingle to a full tear-off, these tools account for pitch, waste, and accessories so your material order matches the roof — not a rough guess.
Quick Tips
- Measure roof area on the slope, not the footprint — a steeper pitch means more square footage to cover.
- Plan for 10–15% shingle waste on a standard gable roof and up to 20% on complex, cut-up roofs.
- Ensure your attic has balanced intake and exhaust ventilation — 1 sq ft of net free area per 150 sq ft of attic floor is the general rule.
- Replace flashing and ice-and-water shield whenever you re-roof; reusing old flashing is a leading cause of leaks.
Roofing Shingle CalculatorMetal Roofing CalculatorTile Roofing CalculatorFlat Roof / TPO / EPDM Membrane CalculatorRoof Pitch CalculatorRoof Square Footage / Area CalculatorRoof Underlayment CalculatorRoof Ridge Cap CalculatorRoof Flashing CalculatorGutter CalculatorDownspout CalculatorSoffit & Fascia CalculatorAttic Ventilation CalculatorIce & Water Shield CalculatorSnow Load CalculatorWind Load / Uplift CalculatorChimney Flashing Calculator