What are you working on?
Type your project below — paint, deck, fence, tile, concrete… — and get a free material estimate in seconds. No sign-up, no fuss.
Browse all 12 calculatorsFree forever · No sign-up · Feet/inches or metric
Our Calculators
12 free calculators for everyday home projects — pick one and start measuring.
Paint Calculator
Find how much paint you need for walls, ceilings and trim.
Flooring Calculator
Estimate flooring packs for laminate, vinyl and hardwood.
Tile Calculator
Count tiles for floors, walls and splashbacks, with waste.
Wallpaper Calculator
Work out how many wallpaper rolls your wall needs.
Room Area Calculator
Measure any room in square feet, metres or yards.
Concrete Calculator
Volume of concrete for slabs, footings and posts.
Mulch Calculator
Bags or cubic yards of mulch for garden beds.
Drywall Calculator
Drywall sheets needed for walls and ceilings.
Deck Estimator
Boards, joists, posts and screws for building a deck.
Fence Calculator
Pickets, posts, rails and concrete for any fence run.
Paver Calculator
Patio pavers, base gravel and bedding sand quantities.
Roofing Shingles Calculator
Shingle bundles, roofing squares and waste for any roof.
Browse by Project
Start from your project type and find the right estimator.
How It Works
Three simple steps to an accurate material estimate.
Pick a calculator
Choose the tool for your project — paint, flooring, tiles, concrete and more.
Enter measurements
Type your room or project dimensions. Switch between feet/inches and metric any time.
Review your estimate
Get quantities with waste allowance, a step-by-step breakdown, and a copy-ready summary.
Helpful Guides
Short, practical guides that make your measurements more accurate.
Why trust our numbers?
Estimating tools are only useful if the math is right. Here's what goes into every calculator before it goes live.
Trade-based formulas
Calculations use manufacturer coverage data and standard trade estimating methods — not guesses.
Tested before publishing
Every worked example is hand-computed and verified against the tool itself, plus 72 automated test checks.
Private by design
All math runs in your browser. Your measurements are never sent anywhere or stored.
Frequently Asked Questions
Are these calculators really free?
Yes. Every calculator on HomeCalc Helper is free to use with no sign-up, and all calculations happen in your browser.
Should I use feet or metres?
Use whichever you measured in. Every calculator has a unit selector, and results are shown in both US customary and metric units where helpful.
Why do the calculators add a waste allowance?
Real projects involve cuts, breakage, pattern matching and mistakes. A 10% waste allowance is standard for most materials; complex layouts may need 15%.
Are the estimates exact?
No — they are planning estimates. Actual needs vary with surface condition, product coverage and installation method. Always confirm coverage figures with the manufacturer and buy a little extra.
What is the difference between a US gallon and a UK gallon?
A US liquid gallon is 3.785 litres; a UK imperial gallon is 4.546 litres. Our paint calculator lets you choose, so coverage figures stay correct.
Do you store my measurements?
No. All calculations run locally in your browser. Nothing you type is sent to our servers.