MaterioPaint, 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.
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.
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