Dunn-Edwards figures in the calculator
Everest interior paint is the starting point of this paint calculator, set to 400 square feet a gallon, the bottom of the “approximately 400–475 sq. ft. per gallon” its data sheet gives as practical coverage per coat. That data sheet lists quart, gallon and five-gallon containers, and those are the can sizes. The pre-filled room needs 2.49 gallons for two coats over walls and ceiling, which comes to two gallons and two quarts, with three whole gallons as the alternative that needs fewer containers.
Suprema and Spartawall for walls, the Dead Flat Ceiling Paint, and Evershield and Spartashield for exteriors are in the Paint menu. Spartawall and the ceiling paint are packed in gallons and five-gallon pails only.
Practical coverage and your surface
Dunn-Edwards calls its figure practical coverage per coat at the recommended dry film thickness, and says it depends on surface conditions and application techniques. Stucco and block walls outside have far more surface per square foot of wall than smooth drywall. For rough stucco, try a lower figure such as 250 in the coverage box and compare the two results.
New surfaces take two coats
Where old paint is sound and repaired, one coat may be enough, the data sheets say; new work typically needs two. Keep Coats at 1 only when repainting over sound paint in a close color.
Dunn-Edwards paints in the calculator: the range sold in the US
| Paint | For | Coverage, as stated | Tins |
|---|---|---|---|
| Everest Interior | Walls | approximately 400–475 sq ft per gallon | 5 gal, 1 gal, 1 qt |
| Suprema Interior | Walls | approximately 400–475 sq ft per gallon | 5 gal, 1 gal, 1 qt |
| Spartawall Interior | Walls | approximately 350–425 sq ft per gallon | 5 gal, 1 gal |
| Dead Flat Ceiling Paint | Ceilings | approximately 300–350 sq ft per gallon | 5 gal, 1 gal |
| Evershield Exterior | Outside walls | approximately 400–475 sq ft per gallon | 5 gal, 1 gal, 1 qt |
| Spartashield Exterior | Outside walls | approximately 400–475 sq ft per gallon | 5 gal, 1 gal, 1 qt |
What one room takes in each
Two coats. Rooms: 12 × 12 ft room with 8 ft walls, one door, one window, walls and ceiling (ceiling only for a ceiling paint). Outside: 26 × 34 ft house with 17 ft walls and two gables.
| Paint | Area | Paint, 2 coats | Buy |
|---|---|---|---|
| Everest Interior (room, 400 sq ft/gal) | 498 sq ft | 2.49 gal | 2 × 1 gal + 2 × 1 qt (fewer cans: 3 × 1 gal) |
| Suprema Interior (room, 400 sq ft/gal) | 498 sq ft | 2.49 gal | 2 × 1 gal + 2 × 1 qt (fewer cans: 3 × 1 gal) |
| Spartawall Interior (room, 350 sq ft/gal) | 498 sq ft | 2.85 gal | 3 × 1 gal (fewer cans: 1 × 5 gal) |
| Dead Flat Ceiling Paint (ceiling, 300 sq ft/gal) | 144 sq ft | 0.96 gal | 1 × 1 gal |
| Evershield Exterior (house, 400 sq ft/gal) | 2,092 sq ft | 10.46 gal | 2 × 5 gal + 2 × 1 qt (fewer cans: 2 × 5 gal + 1 × 1 gal) |
| Spartashield Exterior (house, 400 sq ft/gal) | 2,092 sq ft | 10.46 gal | 2 × 5 gal + 2 × 1 qt (fewer cans: 2 × 5 gal + 1 × 1 gal) |
Coverage per coat for the Dunn-Edwards range sold in the US, from the maker's pages linked above, checked September 2026. Dunn-Edwards and its product names are its owner's trademarks, used only to describe the products; Meadow Tools is not affiliated with or endorsed by Dunn-Edwards.