Wood Finishing Coverage Calculator

Calculate how much finish product you need based on surface area, number of coats, coverage rate, and waste factor. Works for oil, varnish, lacquer, and stain.

Inputs

Surface Area

sq ft

Number of Coats

Coverage per Oz

sq ft/oz

Waste Factor

Tab to move between fields

Results

Total Product Needed

27.5 oz

≈ 7 sticks of butter

Pints to Buy

2 pt

≈ 3 soda cans

Pints Needed1.72 pt

Quarts Needed0.86 qt

Area per Coat50 sq ft

How to Use This Calculator

Enter Surface Area, Number of Coats, and Coverage per Oz.
Set Waste Factor.
Review Total Product Needed (oz) and Pints to Buy (pt).
Use Pints Needed (pt) and Quarts Needed (qt) to inform your decision.
Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Coverage per Oz

Coverage per Oz	Total Product Needed	Pints to Buy
5.45	30.3 oz	2 pt
18	9.2 oz	1 pt
33	5 oz	1 pt
45	3.7 oz	1 pt

What each input means

Surface Area: Total surface area to be finished
Number of Coats: How many coats of finish to apply
Coverage per Oz: Square feet covered per fluid ounce (check product label)
Waste Factor: Extra percentage for spills, absorption, and application waste

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