Construction Calc

Construction Calc is a metric-first calculator built for builders, tilers, decorators and DIYers working in France, Germany, the UK and the US. TEN CALCULATORS, ONE APP • Concrete - volume and bag count (EU 25kg / US 60lb / 80lb bags) • Tile - tile count and boxes, straight or diagonal lay • Paint - litres or gallons by coats and coverage • Drywall / Plasterboard - sheet count, EU and US sizes • Blocks & Bricks - UK, US, or your own custom dimensions and mortar joint • Stairs - risers, going, stringer length, and a real headroom check against UK Part K or US IRC limits • Roof - pitch, rafter length, surface area • Area & Volume - rectangle, triangle, circle, trapezoid • Right Angle - 3-4-5 squaring check and diagonal/hypotenuse • Board Feet - timber volume in US board feet and m³ BUILT FOR A REAL JOBSITE • Fully offline - no internet connection needed, ever • No sign-up, no account, no login • Metric input with explicit mm/cm/m selection - never guess whether a number means centimetres or millimetres • Imperial mode with separate feet/inches fields - no fractions to type • Works with your real block, brick, tile or timber sizes — not just one region's presets SAVE YOUR JOBS Save calculations to a named job as you work through a site. Free covers one job. Construction Calc Pro (one-time purchase, not a subscription) unlocks unlimited saved jobs and lets you send the full materials list - quantities and workings — straight to WhatsApp, SMS or email instead of retyping it for the merchant. No ads. No tracking. No subscription.