Paint Calculator: How Much Paint Do I Need?

What are you painting?

Walls onlyCeiling onlyWalls and ceiling

What condition are the walls in?

Previously painted, good conditionSound painted walls: two finish coats.Previously painted, needs preparationSound walls with small local defects: spot filling, a preparation coat and two finish coats. Not for damp, powdery or chalky walls.New, smooth or already skimmedA preparation coat and two finish coats.New, rough plaster, skimmed smoothFull skimming with wall filler for a smooth finish, then a preparation coat and two finish coats.Not sureWe'll use a conservative planning assumption.

How big is the area?

Use room sizesI know the paintable area

Use the average size of the rooms. Doors and windows aren't deducted in a quick calculation.

Number of rooms

Average room length (m)

Average room width (m)

Average wall height (m)