About TrimTally
Measure walls and openings once. Compare paint, wallpaper and decorative battens, then take a clear quantity sheet to the store.
A method you can inspect
A 120 × 96-inch wall and a 144 × 96-inch wall total 176 square feet. A 36 × 80-inch door removes 20 square feet, leaving 156. Two coats at an entered coverage of 350 square feet per US gallon use 0.89 gallon before allowance. With 10% extra, the estimate is 0.98 gallon, rounded to one 1-gallon can.
The individual site operator is based in Ontario, Canada. This site provides practical browser tools and original worked examples. It is not affiliated with the reference organizations linked in the guides, and does not claim professional certification.
Useful first, lightweight by design
There is no account to create. Tool calculations run on your device, and your entries are not uploaded to a calculation service. The pages use locally hosted fonts and simple diagrams. Printable outputs leave out navigation and advertising.
What to check
Openings are deducted for paint. Wallpaper uses full-height drops; battens use clear sections. Decorative quantities only.
Corrections and feedback
Each tool explains its assumptions alongside the result. If something does not match a worked example, use the contact form with the page name and a non-sensitive description of the problem. Check important dimensions and quantities independently before using them.
How the site is supported
Advertising may help support these free tools when enabled. Ad placements are labelled and separated from tool controls. Advertisements are not endorsements and do not appear on the printable output. Optional analytics, when enabled, measures visits only after your choice; it does not include your tool entries.