Calculate paint for a room
Choose this when you know room dimensions, coats and product coverage.
Use Room paint calculatorGuided project
Paint a room
Measure walls, then choose the paint estimate that matches your available inputs.
Turn measured wall surfaces and product coverage into a material quantity.
Your project workflow
Work from top to bottom. Optional steps can be skipped; alternatives are grouped into one decision.
Check completed steps. You can skip optional steps.
- 1
Step 1
Measure wall area
Establish the wall surface and openings before estimating material.
Use Wall area calculator - 2
Step 2
Choose one approach
Use the option that matches the measurements you already have.
Calculate paint from a known surface
Choose this when you already have a measured surface and coverage data.
Use Paint surface calculator - 3
Optional
Estimate the purchase cost
Use the quantity from your chosen calculator and the supplier's package price.
Use Material purchase cost
Guidance for this job
Measuring areas, runs and openings
A field-measurement method for rectangular areas, independent runs and deductions.
Read guideAllowance and product coverage
Separate net demand, coats, product coverage and contingency before rounding packages.
Read guide