Fence Stain Calculator
Use this fence stain calculator to estimate stainable area, gallons or liters of stain, waste, and optional cost. Enter fence length, height, sides, coats, and coverage per gallon or liter.
Sides
Both sides
Coats
1
Stain to buy
11 gal
Results
Fence stain coverage varies by product, wood condition, and application method. Coverage is the input that controls the math. Labor, when entered, is based on stainable fence area instead of total coat area.
How to use this calculator
- 01Enter the fence length and height.
- 02Choose whether you are staining one side or both sides.
- 03Enter the number of coats, coverage rate, and waste percentage.
- 04Use application method and surface condition as notes, then adjust coverage if rough wood or spray loss will reduce coverage.
- 05Open the cost section if you want stain cost, labor cost, or total estimated cost.
Understanding the math
The calculator starts with fence length times fence height. Both sides doubles that area. Coats multiply the stainable area, then coverage converts the coat area into gallons or liters. Waste is added before the final buy amount is rounded up.
One-side area = fence length x fence height Stainable area = one-side area x sides multiplier Total coat area = stainable area x coats Stain before waste = total coat area / coverage Stain to buy = stain before waste x (1 + waste / 100) Stain cost = stain to buy x price per gallon or liter Labor cost = stainable area x labor cost per area
Labor uses stainable area, not total coat area. That matches how many fence staining quotes are built from surface area, even when the stain itself needs more product for multiple coats.
This page estimates stain only. For a complete wood fence material or broader wood fence cost estimate, use the Wood Fence Calculator. For posts, rails, pickets, gates, and concrete bags, use the Fence Calculator. If you are spacing a picket fence before staining it, use the Picket Fence Calculator.
Fence stain quick reference
Use these values as a starting point, then use the coverage listed on your stain container when you have it.
| Item | Value | Notes |
|---|---|---|
| Rough/weathered coverage | 250 sq ft/gal | Lower coverage is common on thirsty or weathered boards |
| Smooth/new coverage | 300 to 350 sq ft/gal | Check the stain label and adjust the coverage field |
| Typical coats | 1 to 2 | A second coat doubles the coat area |
| Default waste | 10% | Allows for overlap, boards that drink more stain, and touch-ups |
| Example fence | 200 ft x 6 ft | The default example stains both sides |
| Sides note | both sides doubles area | One side uses only the face area of the fence |
Frequently asked questions
How to calculate stain needed for a fence?
Multiply fence length by fence height to get one-side area. Multiply by one or two sides, then multiply by the number of coats. Divide that coat area by the stain coverage rate and add waste.
How much does it cost to stain a 200 ft fence?
A 200 ft by 6 ft fence has 1,200 sq ft on one side or 2,400 sq ft on both sides. At 250 sq ft per gallon and 10 percent waste, both sides need 11 gallons before pricing. Add price per gallon and labor rate to estimate cost.
How far will 1 gallon of stain go?
Many exterior fence stains cover about 250 to 350 sq ft per gallon per coat, but rough or weathered wood can cover less. Use the coverage number from the stain label when you have it.
How much does 1 quart of stain cover?
One quart is one quarter of a gallon. If a stain covers 250 sq ft per gallon, one quart covers about 62.5 sq ft for one coat on a similar surface.
Should you stain one side or both sides of a fence?
Both sides gives the wood more even coverage and a more finished look. One side may be enough for a boundary face or a quick refresh, but it uses half the stainable area of both sides.
How many coats of stain does a fence need?
Many fence staining jobs use one coat, especially with penetrating stains. Some products or dry wood may call for a second coat. A second coat doubles the coat area in this estimate.
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