Fence Painting Cost Calculator

How to measure a fence for paint or stain

Measure the total length of fence you plan to finish, walking each run with a tape or measuring wheel and adding gates. Then measure the height from the ground to the top of the boards (include any lattice or cap). Decide whether you are painting one side or both; neighbours' sides and sides facing a hedge are often skipped.

The surface factor adjusts for the style of fence. A solid board or panel fence is close to 100% of its length × height. Picket and spaced-board fences have gaps, so less of the face is wood, but each board also has edges that take paint, and the rails and posts add surface too. Lower the factor for open styles if you want a tighter estimate, or leave it at 100% for a safe margin.

The fence paint formula

Coverage is the area one gallon or litre covers in a single coat, and it is printed on the can or data sheet. Coverage on smooth, primed surfaces is often in the range of about 250 to 400 sq ft per gallon, but rough-sawn, weathered or very dry wood soaks up more, so the real coverage can be much lower. The calculator defaults to 350 sq ft per gallon (about 8.6 m² per litre) as an example; use the figure for your product and lower it for thirsty wood.

Worked example

A 150 ft privacy fence, 6 ft tall, finished on both sides with two coats of stain that covers 350 sq ft per gallon:

1. Surface per coat: 150 × 6 × 2 sides = 1,800 sq ft.
2. Two coats: 1,800 × 2 = 3,600 sq ft of painting.
3. Paint needed: 3,600 ÷ 350 = 10.3 gallons, so buy 11 gallons.
4. At an example price of $40 per gallon, the paint costs $440.
5. If a painter quotes, for example, a rate per square foot of fence face, enter it in the labor field to add labor to the total.

A metric fence of 45 m × 1.8 m, both sides, two coats at 8.6 m²/L needs about 37.7 litres, so you would buy 38 L (or the nearest combination of tins).

Allowing for waste and absorption

The biggest source of error in fence painting estimates is absorption. New, smooth, previously painted wood behaves very differently from old grey boards that have not been finished in years. A few ways to keep the estimate realistic:

• Lower the coverage for rough or weathered wood, or test one panel and measure how much you used.
• Spraying is quick but loses paint to overspray, especially with open fence styles or in wind.
• The first coat on bare wood often uses more paint than the second.

Rounding up to whole gallons or litres already adds a margin. Buying the full amount from the same batch helps colours match, and unopened cans can often be returned, though policies vary.

Estimating fence painting cost

The total cost has two parts:

• Materials: paint or stain is the main item. Prices vary a great deal by brand and product type, so enter the price of the product you plan to use. Also budget for brushes, rollers or a sprayer, drop cloths, a cleaner or brightener, and sandpaper or scrapers for prep.
• Labor: painters may quote per linear foot of fence, per square foot of fence face, or a fixed price. The calculator uses a per-area rate; if your quote is per linear foot, divide it by the fence height (and multiply by sides if needed) to convert. Prep work such as pressure washing, scraping peeling paint and repairs often adds to the price.

The default prices are examples only and labor is zero by default, so the result is a DIY materials figure until you add a quote. We do not quote national averages because local rates vary too much to be useful.

Paint or stain?

Stain (transparent, semi-transparent or solid) penetrates the wood and generally wears away gradually, which makes recoating simpler. Paint forms a film that can hide more of the wood's imperfections but may crack or peel over time and need scraping before the next coat. Both work with this calculator; just enter the coverage, coats and price for the product you choose.

Tips for a better finish

• Clean the fence and let it dry fully before painting; follow the product's guidance on how long to wait after washing.
• Check the forecast for dry, mild weather, and avoid painting in direct midday sun if the product advises against it.
• Protect plants and the ground with drop cloths, and mask hardware.
• Work top to bottom and along the length of the boards to avoid lap marks.

Frequently asked questions

How much paint do I need for a fence?

Multiply fence length × height × number of sides to get the area, multiply by the number of coats, and divide by the coverage on the can. A 150 ft fence that is 6 ft tall, painted on both sides with two coats, is 3,600 sq ft of painting; at 350 sq ft per gallon that is about 10.3 gallons, so buy 11.

How much does it cost to paint a fence?

Materials depend on the fence area, coats and your paint price; labor depends on local rates, access and how much prep the fence needs. Rather than rely on national averages, enter your paint price and a painter's quote per square foot to estimate your own project.

Should I use paint or stain on a wooden fence?

Stain soaks into the wood and tends to wear gradually, which makes recoating easier. Paint forms a film that can give stronger colour but may peel and need scraping before repainting. Follow the coverage and coat guidance on the product you choose.

How do I account for gaps in a picket fence?

Lower the surface factor to roughly the share of the fence face that is solid wood, then remember that pickets have edges and rails that also take paint. If in doubt, leave the factor at 100%; the extra paint usually gets used on the second coat or touch-ups.

Does a sprayer use more paint than a brush or roller?

Spraying is faster but usually loses some paint to overspray, especially on windy days or open fence styles. If you plan to spray, consider a lower coverage figure than the can states.

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