🪵 Wood Stain Coverage Calculator
Calculate exactly how much wood stain you need for any surface — boards, decks, furniture, and more.
Softwood
Hardwood
Cedar
Rough Sawn
Smooth Planed
Pressure Treated
Composite
MDF / Particle Bd
| Stain Type | Sq Ft per Quart | Sq Ft per Gallon | Typical Coats | Notes |
|---|---|---|---|---|
| Oil-Based Stain | 75–125 | 300–500 | 1–2 | Deep penetration, durable |
| Water-Based Stain | 100–150 | 400–600 | 1–2 | Fast dry, low odor |
| Gel Stain | 50–100 | 200–400 | 1–3 | Thick, great for blotchy wood |
| Penetrating / Danish Oil | 60–100 | 240–400 | 2–3 | Absorbed fully into grain |
| Semi-Transparent Stain | 75–125 | 300–500 | 1–2 | Shows grain, good UV resistance |
| Solid Color Stain | 100–150 | 400–600 | 1–2 | Hides grain, paint-like finish |
| Wiping Stain | 75–125 | 300–500 | 1–2 | Easy application, even color |
| Container Size | Volume (oz) | Volume (L) | Coverage Range | Best For |
|---|---|---|---|---|
| Sample / Tester | 4 oz | 0.12 L | 10–20 sq ft | Test patches |
| Quart | 32 oz | 0.95 L | 75–150 sq ft | Small furniture, trim |
| Half Gallon | 64 oz | 1.89 L | 150–300 sq ft | Cabinets, medium projects |
| Gallon | 128 oz | 3.79 L | 300–600 sq ft | Decks, floors, large projects |
| 5-Gallon Pail | 640 oz | 18.93 L | 1,500–3,000 sq ft | Large decks, commercial jobs |
| Project | Area (sq ft) | Area (m²) | Quarts Needed (1 coat) | Gallons Needed (2 coats) |
|---|---|---|---|---|
| Coffee Table | 8 | 0.74 | 1 qt | 1 qt |
| Dining Table | 18 | 1.67 | 1 qt | 1–2 qt |
| Bedroom Floor (12x14) | 168 | 15.6 | 1–2 qt | 1 gal |
| Small Deck (10x12) | 120 | 11.1 | 1 qt | 1 gal |
| Medium Deck (16x20) | 320 | 29.7 | 1 gal | 2 gal |
| Large Deck (20x30) | 600 | 55.7 | 1–2 gal | 3–4 gal |
| Fence (25x6) | 150 | 13.9 | 1–2 qt | 1 gal |
| Bookcase (3x6) | 18 | 1.67 | 1 qt | 1 qt |
Count how many wood stain to buy can be difficult. Usually folks simply guess the amount. Even so there are some helpful tips and computer tools that simplify the rating of needs for any outside stain work.
The state of the surface is important for outside coverage when one figures out the needed stain. One gallon of stain is enough for 400 to 500 square feet on smooth areas. For a deck or patio up to 550 square feet, two gallons should be enough for the task.
How Much Wood Stain to Buy
If the deck or patio reach 700 square feet, prepare three or even four gallons to end the project.
For shingles and wood surfaces the math works a bit differently. Up to 175 square feet, one gallon of stain no matter the thickness, should be enough. For area up to 550 square feet, one needs to buy two gallons.
Some stains have their own rules for coverage. For instance, TWP stain covers 150 to 200 square feet per gallon for the first coat. The second coat covers 200 to 300 square feet per gallon.
If one applies two coats without coverage, the averaeg drops to around 100 to 125 square feet per gallon. Also solid stain can surprise. One could believe that it covers 200 to 400 square feet, but in practice on certain wood it commonly reaches only close to 90 square feet per gallon for panels.
Also the wood type affects the soaking. Soft wood like pine or fir absorbs stain more quickly and more than hard wood like hickory or oak. Too-thick places can happen, where the layers overlap, if the excess does not level itself quickly with a sprayer.
Some timbers, for instance poplar, already store uneven spread of oils, which alters the soaking. Made wood products like plywood or MDF do not absorb stain evenly because of there makeup.
Semi-clear stains well show the wood texture, while solid stains work more for older decks that need full coverage. Solid stain in effect creates a coat above the wood instead of soaking in. Gel stains stay on the surface, and one good coat commonly gives good coverage for vertical or previously treated surfaces.
For inside wood there is a basic method. Multiply the length by the width to get the square area, then divide by 350 to guess the gallons. Typical doors need around 20 square feet.
Spray stains give the most steady coverage on pine or similar textured wood. Alwayscheck the label of the product for the most exact info about coverage of the chosen stain.
