BCBuildCalc

47 practical calculators ยท 7 regions

Measure twice.
Buy once.

Everyday building maths, made useful. Local units, familiar material sizes, and instant estimates for DIYers and trades.

No sign-upWorks on site๐Ÿ‡ฌ๐Ÿ‡ง Localized for United Kingdom

Browse every tool

Building calculator directory

Open a dedicated guide for formulas, measurements, ordering checks and related calculators.

โ–ฐ Concrete

Concrete slabOrder volumeStrip footingsConcrete requiredPost holesConcrete requiredConcrete bagsBags to buy

โ•ซ Fencing

Fence posts & panelsPanels requiredFence railsRails required

โ–ค Decking

Decking boardsBoards requiredDeck joistsJoists required

โ–ฆ Brick & block

BricksBricks requiredConcrete blocksBlocks requiredBrick mortarMortar required

โ–ฅ Plasterboard & drywall

Plasterboard / drywallSheets requiredJoint compoundTubs required

โŒ‚ Roofing

Roof area & pitchRoof areaTiles / shinglesUnits requiredGutteringLengths required

โ–ง Flooring

Flooring packsPacks requiredUnderlay rollsRolls required

โ—‡ Tiling

Wall & floor tilesTiles requiredTile adhesiveBags required

โ— Painting

PaintPaint requiredPaint a roomPaint required

โ–ฅ Wallpaper

Wallpaper rollsRolls requiredPattern repeatFull drops per roll

โ‰ˆ Insulation

Insulation rollsPacks requiredU-value / R-valueU-value

โ•ฑ Timber & lumber

Stud wallStuds requiredTimber volumeTimber volume

โ–ก Sheet materials

Plywood / MDF sheetsSheets requiredPanel cut yieldParts per sheet

โœฆ Landscaping

Topsoil / mulchBulk volumeGravel / aggregateOrder weightTurf / sodRolls required

โ–ฆ Paving

Paving slabs / paversSlabs requiredPaving sub-baseAggregate required

โ” Driveways

Driveway materialsOrder weightAsphalt / tarmacAsphalt required

โ†˜ Drainage

Drainage fallRequired fallDrain gradientGradient

โŒ Stairs

Stair rise & goingRisers

โ˜ผ Heating

Room heat outputHeat outputRadiator sizingRadiator output

โ–ฃ Doors & windows

Sealant for openingsCartridgesDoor / window areaTotal area

โ‡„ Conversions

Length converterConverted lengthArea converterConverted areaVolume converterConverted volume

Choose your calculator

What are you working on?

Select a trade, then pick the calculation you need. Your chosen calculator opens immediately below.

View calculation โ†“
โ–ฐ
Selected calculatorConcrete slab

Ready-mix volume for a rectangular slab.

Launch

Concrete

Concrete slab

Ready-mix volume for a rectangular slab. Values update as you type. Always check supplier guidance and local codes before ordering.

โ–ฐ
DIY ESTIMATE

Concrete slab

ORDER VOLUME0 mยณ

Includes 5% allowance where applicable

Mode DIYRegion ๐Ÿ‡ฌ๐Ÿ‡ง UK ยท GBPWorking unit metric

Built for the real world

One set of tools.
Seven local contexts.

01

Choose your region

Terminology, default measuring system and currency adapt to United Kingdom.

02

Enter site dimensions

Use metric or imperial without hunting for a separate calculator.

03

Order with confidence

Apply practical waste, see rounded quantities, then confirm with your supplier.