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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? 🎨
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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.
RoomPaintCalc was featured in Design Tools (260.9k followers), Productivity (654.8k followers) and Home (170.1k followers) on Product Hunt. Together, these topics include over 191.4k products, making this a competitive space to launch in.
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.
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New User