Free Building & Trade Calculators
Instant results for concrete, bricks, flooring and more. Metric and imperial, works on any device.
All Calculators
Free, instant, no sign-up — results in seconds
Concrete Slab Calculator
Work out how much concrete you need for any slab, pad, footing or driveway. Get results in m³ or yd³ plus bag counts.
Calculate now →Brick Calculator
Calculate bricks or cinderblocks (CMU) for any wall. Supports UK, Australian and US brick formats with wastage included.
Calculate now →Flooring Calculator
Find out how many tiles, planks or rolls you need for any room. Choose your tile size, wastage allowance and get instant results.
Calculate now →Paint Calculator
Calculate litres of paint needed for any room or wall. Choose coats, coverage and get instant results.
Calculate now →Roofing Calculator
Tiles, metal, shingles or membrane — with pitch factor, material quantities and weight estimate.
Calculate now →Timber Calculator
Coming soon — calculate board feet, linear metres and total cost for any timber job.
Coming soon