All Roofing Calculators

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.

Free 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.

Size stick-built common rafters to AS 1684.2/.3/.4 with snow load, count and 2026 timber prices in AUD. F7 / MGP10 catalogue.

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.

Calculate top-up depth, batt count and material cost for ceiling insulation. NCC 2022 R5.0 climate-zone targets, glasswool, polyester, cellulose.

Estimate 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.

Estimate 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.

Estimate 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.

Calculate 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.

Free Australian roof area calculator. Compute surface area in square metres for gable, hip, skillion and L-shape roofs from footprint, pitch in degrees, and eaves overhang. Colorbond and tile-ready.

Estimate the full installed cost of a roof replacement in Australia in 2026: Colorbond steel, concrete tile, terracotta tile, slate, and zincalume — itemised by material, labour, strip-off, skip, and BCA compliance.

Estimate 2026 Australian roof leak repair pricing in AUD — broken terracotta tiles, Colorbond fasteners, box-gutter and valley fixes — with itemised labour, materials, and emergency call-out fees.

Free Australian roof truss calculator. Size prefab trusses to AS 1684 and AS 4440. Member lengths, count and delivered cost in AUD across NSW, VIC, QLD, WA.

Compare 2026 Australian roofing costs across Colorbond, terracotta, concrete tile, zincalume and slate on the same job. Side-by-side installed cost in AUD, A$/m², service life and cost-per-year.

Size Australian eaves gutter from roof area, pitch and design rainfall intensity per AS/NZS 3500.3:2021. Quad, half-round, OG and high-front box profiles in Colorbond and Zincalume.

Estimate Colorbond and Zincalume roof sheet count, flashings, and installed cost in AUD. Trimdek, Klip-Lok, Custom Orb — sized to AS 1562 and AS 4040.

Calculate metal roof cost in AUD across Colorbond, Zincalume, standing-seam, aluminium, and zinc. Low/mid/high quote ranges with BlueScope and Lysaght 2026 pricing, AS 1562 compliant.

Get a 2026 Australian roof replacement cost band by Colorbond, concrete tile or terracotta — region, pitch, complexity, BAL rating — with insurance and finance scenarios in AUD.

Size eave and ridge ventilation per NCC 2022 F8.5 and AS 4200.1 — intake, exhaust, whirlybird and continuous vent counts in cm² and mm²/m.

Free hip roof calculator for Australia. Compute roof area in m², rafter and hip rafter lengths, and ridge length for any equal-pitch hip roof — to AS 1684 and AS 2050.

Free roof estimate calculator for Australia. Build a contractor-style quote with line-item costs, overheads, profit, contingency and 10% GST — plus a good/better/best 3-tier offer and 30/40/30 progress payments.

Calculate the rise of a skillion (mono-pitch) roof from span and pitch in degrees. Returns rafter length, slope factor, and surface multiplier to AS 1684 and NCC 2022.

Estimate the full cost to replace a flat or low-slope roof in Australia in 2026: TPO, PVC, EPDM rubber, liquid-applied membrane, or torch-on — with strip-off, insulation, parapet capping and box gutters itemised in AUD.

Compare 2026 Australian gutter prices across PVC, Zincalume, Colorbond Quad, half-round, fascia and box gutters on the same job. DIY material-only vs full installer cost, plus 30-year ownership cost projection per AS/NZS 3500.3.

Free Australian roofing square calculator. Convert m² into roofing squares (1 sq = 9.29 m²), then estimate Colorbond sheet count, sarking rolls, ridge cap, and roof screws to AS 1562.1. Includes waste allowance.

Plan a complete Australian roof replacement in 2026: strip, batten, sarking, Colorbond or terracotta, and full installed cost in A$/m² — itemized by line.

Estimate 2026 Australian gutter replacement pricing — tear-out of old gutters, fascia repair, new Colorbond Quad or D-line gutters, downpipes, drip flashing. Per-metre line items.

Calculate roof snow load to AS/NZS 1170.3:2003 for Australian alpine and sub-alpine zones. Returns ground snow (sg), shape coefficient, exposure factor, thermal factor, and design roof snow load.

Size rainwater downpipes from roof catchment, pitch and rainfall using AS/NZS 3500.3 — round and square Colorbond, Zincalume, copper and uPVC.

Estimate roofing materials for an Australian project in 2026: Colorbond sheets, tek screws, sarking, battens, ridge cap and tiles — with AUD cost ranges and AS 2050 / AS 1562 references.

Estimate the on-slope area of a gambrel (Dutch barn) roof in Australia. Two-pitch geometry, AS 2050 / NCC 2022 references, costed in AUD per m² for 2026.