BuildCostLab
buildcostlab.com

Estimate smarter, then prepare a better quote request

BuildCostLab helps you estimate materials in metric or imperial units, compare buying formats, and prepare a cleaner quote brief. Start with the right calculator, check the assumptions that usually move the number, compare options clearly, and turn the result into something a supplier or installer can price properly.

Browse calculators Open quote prep
Estimate - sense-check - compare - brief Metric and imperial support Global English terminology
Quick starts Skirting Board CalculatorHardcore CalculatorTile Backer Board CalculatorRoof Felt CalculatorPaving Jointing Compound CalculatorPaving Calculator
103calculators
25project hubs
324support guides
14location pages

Start with a project plan

For layered jobs, begin with the planner instead of a single calculator. It keeps the surface, base, fixings, trims, waste, and quote notes together.

Planner6 calculators

Patio Planner

A patio order is more than a slab count. Work from the finished area into slabs, Type 1, bedding sand, jointing, edge details, and budget checks before anything is ordered.

Plan this job
Planner6 calculators

Driveway Base Planner

Driveway base costs rise or fall on depth, compaction, membrane, delivery access, and the difference between fill and finished surface material. Plan those layers before comparing quotes.

Plan this job
Planner5 calculators

Drainage Trench Planner

Drainage quotes are easier to compare when the trench is split into pipe, bedding, gravel surround, membrane, fittings, spoil, and reinstatement instead of one broad allowance.

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Planner7 calculators

Room Flooring Planner

Room flooring estimates should connect the floor covering with packs, underlay, trims, skirting, thresholds, subfloor prep, and fitting cost before the order is treated as finished.

Plan this job
Planner6 calculators

Ceiling Plasterboard Planner

A ceiling board job can look simple on area alone, but the real list needs board orientation, fixings, jointing, skim, access, waste, and paint checked together.

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Planner5 calculators

Decking Planner

Decking needs a surface count and a frame count. Boards, joists, screws, supports, trims, rails, steps, and finish choices should be priced from the same deck size.

Plan this job

Start with pages people are already searching for

Recent search-demand signals point to skirting or baseboard trim, hardcore or crushed stone, tile backer board, roof felt, paving jointing, paving or pavers, flooring, laminate, pea gravel, loft or attic insulation, and plasterboard or drywall. These quick links give those searches a cleaner path from the homepage.

Find the right calculator faster

Search by job, material, or buying task, then filter the library so you can start with the right estimate instead of scrolling through an endless list.

Showing all 103 calculators.

Joinery 2 guides
Materials

Coving Calculator

Estimate coving lengths, whole pieces, and ceiling-perimeter buying quantities before you order lightweight or plaster coving.

Trim and Joinery Estimating Estimate - compare - brief
Open calculator Open project hub
Popular Aggregates 4 guides
Materials

Gravel Calculator

Estimate gravel volume, tonnage, bulk bags, and rough cost for driveways, decorative areas, and base layers.

Gravel and Aggregate Estimating Estimate - compare - brief
Open calculator Open project hub
Popular Decorating 4 guides
Materials

Paint Calculator

Estimate paint quantities, tin mixes, and rough material cost for walls, ceilings, and single surfaces.

Paint Estimating Estimate - compare - brief
Open calculator Open project hub

How BuildCostLab helps you plan the job

The site is designed around the practical workflow people actually need: estimate the quantity or budget, pressure-test the weak assumptions, compare routes where necessary, and package the result into a cleaner brief.

1. Start with a usable estimate

Pick the calculator that matches the real material or project question so the starting number is already in the right format for buying or budgeting.

2. Check what could change it

Use the guide links, support notes, and range logic to see where waste, labour, access, pack size, or finish level could move the real total.

3. Brief suppliers more clearly

Turn the calculator result into a short scope note so every builder or merchant is pricing the same measurements, assumptions, and exclusions.

Popular starting points

These are some of the most useful pages for early planning, whether you are buying materials, checking a budget, or preparing a quote brief.

Browse by project type

Open a project hub when the job includes linked materials, supporting guides, and a wider quote-prep path rather than one single calculation.

Flooring Estimating

Estimate flooring packs, approximate board counts, waste, and room-fit buying totals for laminate, wood, and vinyl plank installs before you order.

Open Project Hub
Methodology

See how estimates are built

Read the calculator methodology for formulas, waste logic, conversions, and why planning ranges matter.

Editorial standards

Understand how pages are reviewed

The editorial policy explains source hierarchy, update standards, and how corrections are handled.

Planning use

Use estimates as planning aids

BuildCostLab is designed for planning and quote preparation, not fixed promises. Always confirm live prices, measurements, and site conditions.

Turn the estimate into a clearer brief

Use the calculator result as your starting number, then turn it into a cleaner builder or supplier request with the quote checklist and contact page.

Open quote checklist Contact BuildCostLab