About Home Project Calculators
Free, transparent tools that help homeowners plan projects with real numbers.
What we build
Home Project Calculators publishes free calculators and plain-English guides for common home projects: painting, flooring, deck care, and more over time. Each calculator runs in your browser, uses the prices you enter, and shows the exact formulas and assumptions behind every result.
How we work
- Show the math. Every calculator page explains its formulas so you can check them or adjust for your situation.
- Your numbers, not ours. Material prices vary by region and season, so we ask for yours instead of guessing.
- Defer to the label. Product instructions and manufacturer care guides beat rules of thumb. Our guides say so where it matters.
- Tested formulas. Calculations are covered by automated tests against hand-checked examples.
- No invented expertise. We don’t publish fake reviews, product test results or credentials. Guides are written by our editorial team from widely accepted practice and manufacturer guidance.
What we are not
We are not contractors, engineers or inspectors, and our tools are not a substitute for one. Estimates are for planning and budgeting. For structural, electrical, plumbing, safety or code questions, consult a qualified professional and your local building department.
How the site is funded
The calculators and guides are free. We plan to support the site with advertising and with an optional paid product, the Home Project Planning Bundle. Advertising will never be placed inside a calculator form, and we don’t accept payment to change a result or a recommendation.
Corrections
Spotted an error or have a suggestion for a new calculator? Contact us. We review every correction and update the page date when we change something.