Estimate how much paint you actually need before the project starts wasting money.
Use this calculator to measure wall area, subtract windows and doors, compare one or two coats, and get a cleaner paint estimate before you buy too little or over-order the room.
Estimate paint coverage with less guesswork and less waste
Enter the wall dimensions, openings, coats, and paint coverage rate. The tool will show net paint area, litres needed, and a quick visual preview of the walls being covered.
Paint setup
Use metres for room dimensions and square metres per litre for paint coverage. Keep measurements approximate but realistic so the estimate stays practical.
Room dimensions
Openings and coats
Paint coverage
Painted wall area preview
Paint needed
BalancedEstimated paint: 8.5 litres total.
Net area
WorksNet wall area after subtracting openings: 42.0 m².
Buying note
UsableThat means about 2 cans at 5 litres each with a small buffer.
This paint estimate is currently workable
The estimate gives you a more realistic quantity for walls, openings, coats, and waste so the project can start with less overbuying or last-minute shortage.
Use the paint calculator in the right order
The goal is not only knowing the litres. The goal is getting a cleaner estimate before the room starts wasting time, money, and extra trips.
Measure
Start with real wall area
Use room length, width, and wall height first so the estimate begins with actual surface area instead of paint-can guesswork.
Subtract
Remove windows and doors
Openings matter, especially in smaller rooms where one window or door can change the real paint need more than people expect.
Adjust
Account for coats and waste
A two-coat change or a difficult surface usually matters more than tiny measurement differences once you buy the paint.
Plan
Move into Remodel & Budget
Once the quantity is clearer, use the budget hub to decide what the room actually needs next and what can wait.
Refine the rest of the room with the next related page or tool
Once the paint quantity is clearer, the next strongest move is usually choosing the color direction, budget order, or room layout that supports the update properly.
Bedroom Paint Color Ideas
Use it when the quantity is clear and the next real decision is choosing a calmer color direction that fits the room better.
Room Layout Planner
Use it when painting is part of a larger room reset and the layout still needs to be solved around the new direction.
Remodel & Budget
Use it when the paint estimate is now clear enough that you can plan the rest of the room update in a smarter order.
Apply it in the Bedroom
Move into the bedroom hub when paint is only one part of a room that still needs calmer layout, storage, or styling choices.
Apply it in the Living Room
Use it when the paint update belongs to a larger living room refresh and the room still needs more than surface change.
Move into Remodel & Budget
Go there when the estimate is done and the next question is what to spend on first and what to delay.
When paint is part of a bigger room reset, keep the measurements and decisions together
For people who want room dimensions, paint quantities, color direction, and budget notes in one place instead of splitting the project across random notes and screenshots.
- one place for paint estimates, room measurements, and update priorities
- clearer comparison of what the room needs now and what can wait
- fewer wasted purchases caused by estimating paint without a real room plan
Clearer decisions, more transparency, and less guesswork
Styling Homes is built to make room planning, styling, and home decisions easier to understand with practical guides, useful tools, and transparent recommendations.
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