Question 1

How many spray paint cans do I need for a mural?

Accepted Answer

It depends on wall size, the number of colours, and surface texture. The calculator uses: wall area × colour percentage × surface coefficient ÷ can coverage. A 50 m² smooth wall with 10 colours typically needs 25–40 cans.

Question 2

How do I calculate spray paint for a wall?

Accepted Answer

Upload your mural design — the calculator detects every colour, matches them to real paint codes from MTN 94, Montana, Molotow, Loop and others, then computes the cans you need based on wall dimensions and surface type.

Question 3

How much does it cost to paint a mural?

Accepted Answer

A standard 400 ml spray can covers ~1.5–2.5 m² and runs €4.50–€7.00. Acrylic bucket paint covers ~10 m² per litre. The calculator gives an exact estimate based on your design, brands and chosen currency.

Question 4

What spray paint brands work best for murals?

Accepted Answer

MTN 94 (smooth coverage, 200+ colours), Montana BLACK (high pressure for fills), Montana GOLD (premium low pressure), Molotow Premium (high pigment) and Loop (affordable). Most artists mix brands — the calculator supports multi-brand selection.

Question 5

Does wall texture affect paint coverage?

Accepted Answer

Yes. Smooth plaster is the baseline. Brick absorbs ~50% more paint, rough concrete ~30% more, wood ~20% more. The calculator applies the surface coefficient automatically.

Montana BLACK Spray Paint Calculator

Key facts

Mural Paint Calculator by Sketchar

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Frequently Asked Questions

How many spray paint cans do I need for a mural?

How do I calculate spray paint for a wall?

How much does it cost to paint a mural?

What spray paint brands work best for murals?

Does wall texture affect paint coverage?

What brushes do you need for a mural?

What rollers are best for painting a mural?

How much primer do I need for a wall?

What tools do you need to paint a mural?

How do you best lay out a mural design on a wall?