For homeowners
Free roofing tools
Plan a roof before you call a roofer. Work out the size, the pitch and a fair cost range, and check a roofer's license. Each tool is free, needs no sign-up, and says how it does the math.
Roof cost calculator
What a new roof costs by material and roof size: asphalt, metal, tile, slate and flat. National figures from HomeGuide, with the method and the date.
Work out the costRoofing squares calculator
Turn the size of your house into roof area, roofing squares and shingle bundles, with a line for waste. Free, and it works on your phone.
Count the squaresRoof pitch calculator
Turn rise and run into roof pitch, the angle in degrees, and the multiplier that turns a house footprint into roof area. With a table of common pitches.
Find the pitchRoofer license lookup by state
The official roofer license lookup for every state and DC, in one table. Where a state has no lookup, we say so, and link to its license rules.
Look up a licenseRoof size and cost estimate from a satellite photo
Type your address. We find your roof from above and give you its size in squares, the pitch, and a cost range for five materials.
Estimate my roof