Materio

Paint, plaster, primer

Packs per area, with coats. Calculate in your browser. Results are rounded up to whole packs, the way you buy them.

Paint, plaster, primer

Packs per area, with coats.

Building material catalogue — 48 materials in the catalogue

How we calculate it

What you enter

  • Area (m²)
  • Coverage (m²/pack)
  • Number of coats
  • Openings (m²)

Formula

net = Area − Openings
area to cover = net × Number of coats
packs = ⌈ area to cover ÷ Coverage ⌉
actual waste = (packs × Coverage − area to cover) ÷ (packs × Coverage) × 100%

Example

The default values from the form, run through the same engine:

To buy
2 packs
Waste37.5%

What to watch out for

The coverage on the label (m²/l or m²/pack) assumes a smooth, primed surface. Absorbent plaster uses more. Only deduct openings if you are genuinely not painting them.

The Materio app for Android uses the same formula. The site's engine is a 1:1 port of the app's code.

Other calculators

Tiles, panels, porcelainWallpaperAdhesive / mortar

Guides that use this calculator

How much paint for a roomHow much skim coat for a wallInsulating a house with EPS

All calculators All guides

The same formula in the app Materio for Android uses the same engine offline — with the material catalogue and results saved into a project. Download