Fence Stain Calculator
Enter your fence dimensions, style, and wood condition to get an accurate stain estimate — coverage varies more than most people expect between a new privacy fence and a weathered picket fence.
Fill in your fence details and click Calculate to see your stain estimate.
How to Calculate How Much Fence Stain You Need
Measure the total length and height of your fence to find the base surface area, then adjust for your fence style, whether you're staining one side or both, and your wood's condition. Coverage rates on the can assume smooth, evenly porous wood — real fences rarely match that exactly, which is why condition matters as much as square footage.
Why Fence Style Changes the Math
A privacy or solid-board fence has no gaps, so the full length times height is your surface area. A picket fence has visible spacing between boards, so you're covering roughly 30–40% less actual wood per linear foot. A shadowbox fence alternates boards on both faces with overlap, which adds extra surface area beyond a simple flat panel — often close to what you'd use staining both sides of a solid fence.
Why Wood Condition Matters More Than the Can Label
New, smooth wood under a year old is dense and takes stain evenly, so it's the most efficient surface to cover. Weathered, gray, or rough wood has an opened-up grain from sun and rain exposure, and can absorb 20–40% more stain than the manufacturer's coverage rate suggests. A maintenance coat over previously stained wood usually needs the least product of the three, since the surface is already partially sealed.
Oil-Based, Water-Based, or Solid?
Oil-based semi-transparent stains penetrate deeper into the wood grain and typically cover less area per gallon than water-based formulas. Solid color stains sit more like a thin paint film on the surface and generally cover more area per gallon, though they hide the wood grain rather than showing it through.
One Coat or Two?
Two coats is the standard recommendation for most fences, especially bare or weathered wood, to get full, even color and protection. New wood under a year old can sometimes get away with one coat, since it hasn't opened up enough to need a second pass.
Building or Repairing the Fence First?
If you haven't built the fence yet, start with our Fence Calculator to plan posts, panels, and concrete. If the existing finish is peeling, bare in patches, or you're switching from paint to stain, check our Primer Calculator before your first coat.