Fence Stain Calculator
Estimate exterior fence stain from fence length, height, painted sides, coat count, product coverage, waste and container size.
Default project preview
5 containers
Fence-face area
1,200 ft²
Adjusted surface area
1,380 ft²
Total coat area
2,760 ft²-coats
Required stain
20.24 gal
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Fence length
Enter this project assumption in ft. The current imperial default is 100 ft.
Fence height
Enter this project assumption in ft. The current imperial default is 6 ft.
Stained sides
Enter this project assumption in a unitless value. The current imperial default is 2. Minimum: 1. Maximum: 2.
Stain coats
Enter this project assumption in a unitless value. The current imperial default is 2. Minimum: 1.
Posts, rails and texture allowance
Enter this project assumption in %. The current imperial default is 15 %. Minimum: 0. Maximum: 75.
Product coverage
Enter this project assumption in ft²/gal. The current imperial default is 150 ft²/gal.
Extra stain allowance
Enter this project assumption in %. The current imperial default is 10 %. Minimum: 0. Maximum: 50.
Container volume
Enter this project assumption in gal. The current imperial default is 5 gal.
Price per container
Enter this project assumption in a unitless value. The current imperial default is 175. Minimum: 0.
How to read the outputs
Fence-face area
2 sides. Default preview: 1,200 ft².
Adjusted surface area
posts, rails and texture included. Default preview: 1,380 ft².
Total coat area
2 coats. Default preview: 2,760 ft²-coats.
Required stain
extra allowance included. Default preview: 20.24 gal.
Purchased stain
full containers. Default preview: 25 gal.
Material cost
stain containers only. Default preview: $875.00.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Adjusted surface = length × height × stained sides × detail factor. Required stain = adjusted surface × coats ÷ coverage × extra allowance. Containers are rounded up.
Reviewed project guidance
How to use this estimate in a real project
Last reviewed: August 19, 2026
Estimate fence stain volume from stainable surface area, number of coats and the selected stain's real coverage rate.
Calculation steps
- 1Measure fence length and height for each stained section.
- 2Account for the faces that will actually be stained and adjust for openness if the fence is not solid.
- 3Multiply by coat count.
- 4Divide by the selected stain coverage and round to available container sizes.
Worked numerical example
A 150 ft long, 6 ft high fence stained on both faces represents about 1,800 ft² before accounting for open gaps. At 250 ft²/gal for one coat, about 7.2 gallons are required before container rounding.
Purchasing and rounding
Use the coverage rate for the exact stain and wood condition. New smooth boards, rough-sawn cedar and weathered absorbent wood can consume very different volumes even at the same fence area.
Interpret the result
The result estimates stain volume, not labor or surface-preparation time. Open pickets reduce face area but add edges; spraying can also increase overspray compared with brushing or rolling.
Page-specific assumptions
- Coverage matches the selected stain and substrate.
- The modeled fence surface reflects solid versus open construction reasonably.
- Only surfaces receiving stain are included.
Common mistakes
- Using paint coverage for penetrating stain.
- Forgetting the second face.
- Ignoring rough-sawn absorption.
- Adding a large generic waste factor instead of using realistic coverage.
Primary and technical references
BuildMeter provides planning estimates, not engineering, architectural, electrical, mechanical, plumbing, permit or code approval. Review the methodology and verify final decisions with product documentation and qualified professionals.
BuildMeter Guides
Understand the measurements and assumptions
Use these visible reference guides before changing project inputs or planning allowances.
FAQ
Fence Stain Calculator questions
Is fence stain coverage lower than paint coverage?+
It can be, especially on rough, dry or weathered wood. Use the coverage stated for the selected stain and application method.
Should posts and rails be measured separately?+
For maximum precision, yes. The detail percentage provides a simpler planning allowance when separate measurements are unavailable.
Does spraying use more stain?+
Overspray and transfer loss can increase consumption, so raise the extra allowance when spraying.