Free Roofing Calculators That Actually Work
Get instant, accurate answers on roof pitch, area in square metres, slope angle, sheeting and tiles, and replacement cost. No signup, no email — just numbers. Built for Australian homeowners and trades.
Most popular calculators
- Roof Pitch Calculator (Australia)Free roof pitch calculator for Australian builds. Convert between roof angle in degrees, rise/run and rafter length. Get the slope factor for accurate on-slope area to AS 2050.
- Roof Tile & Sheet CalculatorFree Australian roof tile and sheet calculator. Calculate Colorbond corrugated sheets, Klip-Lok standing seam, concrete tiles, terracotta tiles and shingles in pieces and pallets per m².
- Roof Rafter Calculator (Australia)Size stick-built common rafters to AS 1684.2/.3/.4 with snow load, count and 2026 timber prices in AUD. F7 / MGP10 catalogue.
- Roof Area Calculator (Australia)Free roof area calculator for Australian projects. Get on-slope area in m², Colorbond sheet count, tile quantities and sarking rolls based on footprint and pitch in degrees. AS 2050 compliant.
- Ceiling Insulation CalculatorCalculate top-up depth, batt count and material cost for ceiling insulation. NCC 2022 R5.0 climate-zone targets, glasswool, polyester, cellulose.
- Ceiling Insulation Cost CalculatorEstimate 2026 ceiling-insulation cost in AUD: material, labour and total installed price for glasswool batts, blown cellulose and Earthwool. NCC 2022 R5.0 climate-zone targets.
- Gutter Cleaning Cost CalculatorEstimate 2026 Australian gutter cleaning prices in AUD by linear metre, storey count, debris level, and access. Itemised call-out floor, downpipe flush, gutter-guard refit, and bushfire-zone leaf-load adjustment.
- Gutter Installation Cost CalculatorEstimate 2026 Australian gutter installation pricing per linear metre by profile, material, building height, and access. Itemised labour, materials, downpipes, leaf guards, and removal in AUD.
- Gutter Slope CalculatorCalculate Australian eaves-gutter fall, gradient and per-metre drop using AS/NZS 3500.3 minimum 1:500 or a custom 1:N gradient. Bushfire-zone overflow guidance and Colorbond Quad / half-round profile context.