Alfarero / Paint calculator
A clear plan for every gallon.
Enter your measurements. See your paint quantity. Build a list for the whole project.
What are you painting?
Estimate one surface at a time.
Measure the room in feet. We’ll calculate all four walls.
The starting 51 sq ft allows for one 21 sq ft door and two 15 sq ft windows. Replace it with your total.
Set the coverage.
Use the rate on your chosen paint’s label.
350 sq ft/gal is a starting assumption. Rough or porous surfaces may need a different rate.
Choosing a product does not change the coverage above. Check its current label for your surface and sheen.
One coat over the same paintable area.
Keep the whole project together
Your material list.
Add rooms and finishes separately, then save your plan.
Your project starts with one surface.
Check the estimate above, then tap “Add to material list.”
Back to measurementsSaved on this browser only. Nothing is submitted to Alfarero.
How the estimate is calculated
Paint = paintable area × finish coats × (1 + waste percentage ÷ 100) ÷ coverage.
Walls: 2 × (room length + room width) × wall height, minus openings. Primer is calculated separately.
Planning estimate from Alfarero Painting LLC · (956) 261-3779 · Verify the selected product label. Primer cost, tools, labor, and tax are separate.