All calculators

Paint Coverage

Litres needed for a room (multi-coat)

m

Reading 4 m

m

Reading 3 m

m

Reading 2.4 m

Reading 1

Reading 2

Reading 2

Results

Paint needed
7.5L
SurfacePreviously painted
Net surface area40.8 m²
Total covered (×coats)81.6 m²
Coverage rate~12 m²/L
Inc. 10% waste7.5 L

What to buy — 5 items

Matt emulsion 5L tin
1 tin
Matt emulsion 2.5L tin
1 tin
Roller sleeve (medium pile)
2 pc
Cutting-in brush 50mm
1 pc
Dust sheet 12 ft × 9 ft
2 pc

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Indicative design aids — the main figures and where each comes from are listed under "Figures based on" below.

Figures based on

  • Coverage by paint type (matt 12, silk 13, satinwood 14, gloss 15, masonry 7 m²/L ...): Typical — retail emulsion tins state about 10 to 14 m²/L (Dulux Matt "up to 14 m²/L"; the B&Q and Wickes calculators assume 10 m²/L), and these sit between. Check the coverage on the tin
  • Surface factors (×1.05 to ×1.25) and the primer for each surface: No source — workshop estimate: fixed estimating assumptions
  • Door 1.8 m², window 1.5 m² deducted: No source — workshop figure: a fixed estimating assumption; the counts are inputs
  • Waste +10%: No source — workshop estimate: a fixed estimating assumption
  • Tins of 5, 2.5 and 1 L: Typical — common UK tin sizes. Check what the product comes in
  • Coats: No source — workshop figure, adjust to suit: an input (default 2). The tin says how many

Indicative design aids. A standard is named with its edition; each is still to be checked against the published text. "Typical" means no standard sets it: check the bag, tin, data sheet or supplier named. "No source" means a workshop estimate: adjust to suit, or, where the box says it is fixed, a fixed estimating assumption.