Free UK Construction Calculators
Calculate exactly how many materials you need for any project. Visual waste diagrams show cutting layouts. Standard UK sizes. No signup, no cost.
Built for tradespeople and DIY enthusiasts across the UK
Calculators
Free UK construction calculators — more coming soon
Why CalcTools.uk?
UK Standard Sizes
Every calculator uses UK material sizes: 215x102.5x65mm bricks, 2400x1200mm plasterboard, 25kg cement bags, 2.5L/5L paint tins. No converting from American sizes.
Visual Waste Diagrams
See exactly where every sheet, tile and board goes. Green for full pieces, amber for cuts, red for waste. Know what you're buying before you buy it.
Real Cutting Patterns
Not just "area divided by material size plus 10%". We calculate actual sheet layouts, optimal orientation, reusable offcuts and true waste.
100% Free, No Signup
All calculations run in your browser. No accounts, no limits, no data stored on servers. Bookmark it and use it on site.
How Our Waste Diagrams Work
Every material calculator shows a visual cutting layout
Full Pieces
Uncut materials used whole — zero waste
Cut Pieces
Materials that need cutting to fit — dimensions labelled
Waste Offcuts
Material you can't reuse — shows you exactly what's wasted
Calculate it. Build it.
Stop guessing. Know exactly what you need before you go to the merchant.