Paint Cost per Square Meter Calculator
Compare the real material cost of painting by combining product price, coverage, coat count and wastage. This is more useful than comparing paint cans by sticker price alone.
Paint cost inputs
Effective painting cost
Why paint cost per square metre is more useful than price per litre
A low price per litre does not automatically mean a low cost per finished square metre. Coverage, number of coats and practical losses all affect the amount of product consumed.
Material cost / m² = adjusted litres / m² × price per litre
Worked example
At $8/L, 10 m²/L coverage, two coats and 8% allowance, adjusted consumption is 0.216 L/m². Material cost is therefore about $1.73/m² before any labour or other project costs.
Comparing two products
Keep the substrate, required coats and allowance basis consistent when comparing products. Otherwise a lower apparent cost can simply reflect a different calculation basis.
Why actual project cost can differ
Irregular surfaces, colour changes, touch-ups, masking and site conditions can increase the amount purchased beyond the theoretical model.
Frequently Asked Questions
Is price per litre enough?
No.
Does wastage affect cost per m²?
Yes.
Can labour be included?
You can enter another user-supplied cost per m², but it is kept separate from paint material.
Does more coverage always mean lower cost?
Not necessarily, because product price and required coats also matter.