Everyday Tools
Paint Calculator
- Browser-based
- No signup
Browser-based
Enter room dimensions, door and window counts, coats, and coverage per gallon to estimate paintable square footage and gallons needed. Processing runs in your browser.
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
How to use this tool
1. Enter room length, width, and wall height in feet. 2. Toggle ceiling if painting it. 3. Enter door and window counts and number of coats. 4. Adjust coverage per gallon if your paint label differs from 350 sq ft. 5. Click Calculate and round up when buying.
Worked example
Example: a 12×10 ft room with 8 ft walls, one door, one window, and two coats needs roughly 1–2 gallons at 350 sq ft/gal coverage.
How it works
Estimates wall (and optional ceiling) square footage, subtracts standard door and window areas, and divides by coverage per gallon and number of coats to suggest gallons of paint. Runs in your browser.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data is processed in your browser and is not uploaded to our server.
Frequently asked questions
Is the Paint Calculator free to use?
Yes. Utilnivo tools are free to use and do not require an account.
Are my inputs stored?
Utilnivo does not require an account. See the privacy note on this page for how your data is processed for this tool.
How do I get started with Paint Calculator?
Open the tool on this page, enter your inputs, and use the on-screen controls. No account is required.
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