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ProjectCalcMeasure. Calculate. Build.

Measure. Calculate. Build.

Calculate construction
materials with confidence.

From concrete and gravel to paint and roofing — get accurate material quantities, transparent formulas, and buy the right amount for your project.

▧ Real formulas, fully visible⇄ Imperial & metric units◔ Waste factors included◈ Trusted by builders & DIYers
01 / SLAB STUDY
Slab concrete construction studyProfessional concrete material artwork with live ProjectCalc dimensions and formula annotations.L 10 ftW 10 ft4 inV = L × W × Tcheck your wasteA
DIMENSIONS / NOT TO SCALEMEASURE → ALLOW → BUY
Imperial + metricEditable waste allowancesPurchase-ready quantitiesThe math, always visible

Browse by Category

Find the right calculator for your project. Organized by how you build.

View all categories  →

Concrete

Slabs, footings, columns, steps, bags and more.

2 calculators

Masonry

Bricks, blocks and pavers.

3 calculators

Flooring & Tile

Tile, flooring, underlayment and layout planning.

2 calculators

Paint & Drywall

Paint, primer, drywall sheets and supplies.

2 calculators

Landscaping

Gravel, mulch, soil, sod and outdoor projects.

4 calculators

Roofing

Shingles, roofing area and materials.

2 calculators

Measurement

Area, volume, conversions and more.

1 calculator

Featured Calculators

Useful calculators to help you get the job done.

View all calculators  →

Concrete Calculator

Slabs, footings, columns, steps, bag counts.

Volume → waste allowance → bags to buy
10 × 10 ft · 4 in · 10% wasteBUY 62 × 80 lb bags
Most Popular

Paint Calculator

Walls, ceilings, openings, coats, tins to buy.

Wall area → coats → cans to buy
Save Money

Gravel Calculator

Yards, meters and approximate tons by depth.

Area & depth → volume → approximate weight
Landscaping

Tile Calculator

Tiles and boxes with layout-aware waste.

Room area → cuts & waste → tiles or boxes
Plan Layouts

Transparent FormulasSee the math. Build with confidence.

Imperial & MetricWork in the units you prefer.

Waste-Aware EstimatesBuy the right amount, avoid waste.

Printable & Shareable ResultsSave, print or share your calculations.

How It Works

Get your material estimate in three simple steps.

  1. 1

    Choose a Calculator

    Pick the tool for your project from our library, then measure your space.

  2. 2

    Enter Your Project Details

    Input your measurements, units and options — and make room for the real world.

  3. 3

    Get Results

    See quantities, formulas and assumptions, and know exactly what to buy.

ONE PROJECT. MORE THAN ONE MATERIAL.

Building a patio?

Start with the pavers, then carry your area into the gravel calculator to estimate the base beneath them.

PaversBase gravelStart your patio ↗

04THE COMPLETE TOOLKIT

Every material. A clear answer.

16 AVAILABLE TOOLS

Concrete

Masonry

Flooring & Tile

Paint & Drywall

Landscaping

Roofing

Conversions & Measurement

Nothing hidden behind the number.

Formulas, material assumptions, sources, and review dates are published with every calculator. You can see exactly what goes into your estimate.

Our methodology ↗