Stucco Calculator
Estimate bags of stucco mix for a wall area.
Enter the wall area you're coating and the coverage your stucco mix gives per bag to estimate the number of bags. Coverage varies a lot by coat and thickness, so this is a planning figure — check your product's data sheet and buy extra.
How it works
Divide the wall area by the coverage per bag, then add waste. Coverage depends heavily on coat and thickness: a bag may cover around 25 square feet for a base coat but more for a thin finish coat. Three-coat stucco needs separate scratch, brown, and finish estimates.
Frequently asked questions
How much stucco do I need?
Divide the wall area by the coverage per bag (about 25 sq ft for a base coat) and add waste. A 500 sq ft wall needs roughly 21 bags at that coverage.
How much area does a bag of stucco cover?
It varies widely — often around 25 square feet for a base coat at 3/8 inch, and more for a thin finish coat. Check your product's data sheet.
Does stucco need multiple coats?
Traditional stucco is applied in three coats — scratch, brown, and finish — each needing its own material estimate.
Is this calculator free and private?
Yes. Every CubicCabin calculator runs entirely in your browser, so the numbers you enter are never uploaded or stored. There's no sign-up, no limits, and it keeps working even if you lose connection after the page loads.