Free tools
Roofing calculators
Every calculator homeowners actually need — free, independent, and built on the same numbers real roofers use.
- FeaturedRoof Cost Calculator
Full replacement estimate by size, material, state, pitch and complexity — 45 seconds.
Open - CalculatorRoof Area Calculator
Estimate total roof surface from footprint & pitch.
Open calculator - CalculatorShingle Bundle Calculator
How many bundles of shingles your roof needs.
Open calculator - CalculatorRoof Pitch Calculator
Turn rise & run into pitch, angle, and multiplier.
Open calculator - CalculatorMetal Roof Cost Calculator
Standing-seam metal cost by size and state.
Open calculator - CalculatorRoofing Squares Calculator
Convert square footage to roofing squares.
Open calculator - CalculatorRoof Financing Calculator
Estimate monthly roof loan payments.
Open calculator - CalculatorRidge Cap Calculator
Bundles of ridge cap shingles for hips and ridges.
Open calculator - CalculatorUnderlayment Calculator
Rolls of synthetic underlayment for your roof.
Open calculator - CalculatorFlashing Calculator
Linear feet of step, valley, and drip-edge flashing.
Open calculator - CalculatorRoof Vent Calculator
Net free area of intake and exhaust ventilation.
Open calculator - CalculatorRoofing Waste Calculator
How much waste to add for cuts, hips, and valleys.
Open calculator - CalculatorRoofing Material Cost Calculator
Ballpark material-only cost by roof size and material.
Open calculator