Finish coverage calculator
How much stain, polyurethane, lacquer, or shellac do you need? Plug in your project area, coat count, and the manufacturer's coverage rate (usually printed on the can in sqft/oz or sqft/gal). A 15% buffer is included by default to cover drips, wipe-back, and a touch-up coat.
You need 41.4 oz total (base 36.0 oz).
Buy 3 pints or 2 quarts.
Reading the can
One US gallon = 128 fluid ounces. If a can lists “120 sqft per gallon”, that's 120 ÷ 128 ≈ 0.94 sqft per ounce — paste that into “Coverage per oz”.