Construction calculators for builders, tradespeople and small contractors
TradesCalculators helps UK trades quickly estimate materials, job costs, profit, labour charges and VAT. Use our free calculators to price work more clearly, avoid underquoting, and check the numbers before you start a job.
Popular calculators
- Paint Calculator: estimate paint needed for walls and ceilings.
- Brick Calculator: work out bricks needed for walls.
- Concrete Calculator: calculate concrete volume for slabs and footings.
- Job Costing Calculator: price labour, materials, overheads and profit.
Material calculators
Estimate quantities before you order materials. These calculators are designed for everyday trade jobs, DIY projects, small building work and quick site checks.
Paint Calculator
Work out how much paint you need for walls, ceilings and rooms based on surface area and coverage.
Use the Paint Calculator →Brick Calculator
Estimate how many bricks you need for a wall, including allowance for mortar and waste.
Use the Brick Calculator →Concrete Calculator
Calculate concrete volume for slabs, bases, paths, footings and general construction work.
Use the Concrete Calculator →Gravel Calculator
Estimate gravel quantity for driveways, paths, borders and landscaping jobs.
Use the Gravel Calculator →Tiles Calculator
Calculate the number of tiles needed for floors or walls, including a sensible waste allowance.
Use the Tiles Calculator →How Many Bricks Do I Need?
A simple brick quantity calculator for garden walls, extensions, small builds and repairs.
Calculate bricks needed →Mortar Calculator
Estimate mortar, sand and cement quantities for brick and block work.
View calculator hub →Paving Calculator
Plan slabs, paving areas, base layers and material quantities for outdoor work.
View calculator hub →Price jobs with more confidence
Materials are only part of the job. TradesCalculators also helps with labour, profit margins, markup, VAT and overall job costing.
Use the Job Costing Calculator- Estimate labour costs before quoting.
- Add material costs and overheads.
- Check profit before accepting the job.
- Calculate VAT and markup clearly.
- Avoid underpricing small jobs.
Business calculators for tradespeople
Simple tools to help builders, landscapers, decorators, electricians, plumbers and contractors understand whether a job is actually worth doing.
Profit Per Job Calculator
Check how much profit is left after labour, materials, overheads and other job costs.
Calculate profit per job →Job Costing Calculator
Build up a job price from labour, materials, overheads, profit and VAT.
Use the Job Costing Calculator →Labour Cost Calculator
Work out labour charges based on hourly rates, day rates, time on site and job duration.
Use the Labour Cost Calculator →Profit Margin Calculator
Calculate profit margin from your selling price and costs, then check whether the job stacks up.
Use the Profit Margin Calculator →Markup Calculator
Apply a markup to your costs so your quote includes a sensible profit allowance.
Use the Markup Calculator →VAT Calculator
Add or remove UK VAT from job prices, invoices and supplier costs.
Use the VAT Calculator →Which calculator should you use?
Pick the calculator that matches the job you are trying to price or measure.
| Task | Best calculator | Use it for |
|---|---|---|
| Working out material quantities | Construction Calculators | Paint, bricks, concrete, gravel, tiles and general material estimates. |
| Pricing a full job | Job Costing Calculator | Labour, materials, overheads, profit and VAT. |
| Checking if a job is profitable | Profit Per Job Calculator | Seeing what is left after costs are removed. |
| Adding a markup | Markup Calculator | Turning cost prices into selling prices. |
| Adding or removing VAT | VAT Calculator | Checking VAT-inclusive and VAT-exclusive prices. |
Why TradesCalculators exists
Many small trade businesses lose money because jobs are priced too quickly, material quantities are guessed, or profit is only checked after the work is complete.
Built for practical jobs
These calculators are designed around real trade use cases: small builds, decorating, landscaping, repairs, labour pricing and job quoting.
Simple inputs
Enter the measurements or costs you already know, then use the result as a quick estimate before ordering materials or sending a quote.
Useful for UK trades
The site is focused on UK tradespeople, with calculators covering VAT, profit, labour, materials and job pricing.
Related trade guides
Need help with the business side of running a trade business? Visit our related guides on accounting software, invoicing, bookkeeping and tax tools for tradespeople.
Best Accounting Software for Tradespeople
Compare accounting software options for UK trades, including QuickBooks, Xero, Sage and FreeAgent.
Read the guide →Accounting Software for Builders
See which accounting tools are most useful for builders, contractors and construction businesses.
Read the guide →Accounting Software for Plumbers
Compare invoicing, expenses, VAT and bookkeeping software for plumbing businesses.
Read the guide →Start with the calculator you need today
Whether you are pricing a job, ordering materials or checking your profit, TradesCalculators gives you quick numbers before you commit.
View all free calculators