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RoomPaintCalc
Free tool: calculate exactly how much paint your room needs.
Tired of buying too much paint or running out mid-project? RoomPaintCalc is a free calculator that tells you exactly how many gallons you need — no sign-up, no apps. Enter room dimensions, add doors/windows (auto-subtracted), set coats and coverage, get your answer instantly. Most calculators ignore doors/windows or hide behind a sign-up wall. RoomPaintCalc is one clean page. Supports imperial & metric.
Hey hunters! 👋
I built RoomPaintCalc after watching my friend buy 5 gallons of paint for a small bedroom... and return 3 of them unopened.
Every existing paint calculator I found was either:
• Buried behind a sign-up form
• Too simplistic (ignored doors/windows/coats)
• Or part of a bloated painting service website
I just wanted a clean, instant answer: "How many gallons do I actually need?"
So here it is — one page, no account needed, handles doors + windows + multiple coats. Free forever.
Would love to hear from fellow DIYers and pros. What features would make this more useful for you? 🎨
About RoomPaintCalc on Product Hunt
“Free tool: calculate exactly how much paint your room needs.”
RoomPaintCalc was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #18 on the daily leaderboard. Tired of buying too much paint or running out mid-project? RoomPaintCalc is a free calculator that tells you exactly how many gallons you need — no sign-up, no apps. Enter room dimensions, add doors/windows (auto-subtracted), set coats and coverage, get your answer instantly. Most calculators ignore doors/windows or hide behind a sign-up wall. RoomPaintCalc is one clean page. Supports imperial & metric.
On the analytics side, RoomPaintCalc competes within Design Tools, Productivity and Home — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how RoomPaintCalc performed against the three products that launched closest to it on the same day.
Who hunted RoomPaintCalc?
RoomPaintCalc was hunted by New User. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of RoomPaintCalc including community comment highlights and product details, visit the product overview.
New User