Drywall Mud Calculator
Enter your sheets or square feet, pick a finish level and a compound, and get the pails or bags to buy, plus how many sheets one bucket finishes.
- Sheets per bucket
- Finish levels 2 to 5
- Ready-mix or setting
- USG coverage
Your estimate
Level 4, all purpose ready-mix1.4 exact
Rule of thumb
Coverage is the manufacturer's figure for taping plus two finish coats, scaled for the coats each level adds or leaves out. Thick fills, poor framing and beginner technique all use more.
How many sheets of drywall per bucket of mud
| Compound | Level 2 | Level 3 | Level 4 | Level 5 |
|---|---|---|---|---|
| All purpose ready-mix, 4.5 gal pail | 28.1 | 18.8 | 14.1 | 9.4 |
| Lightweight ready-mix, 4.5 gal pail | 29.9 | 19.9 | 15.0 | 10.0 |
| Setting-type powder, 18 lb bag | 21.6 | 14.4 | 10.8 | 7.2 |
Level 4 is the manufacturer's published coverage. Levels 2, 3 and 5 are our estimate, scaled by the coats each one leaves out or adds.
One 4.5 gallon pail of all purpose joint compound finishes about 14 sheets of 4x8 drywall at a normal level 4 finish. That comes from USG's published coverage of about 10 gallons per 1,000 sq ft of board, which covers the tape coat and two finish coats over flat joints, inside corners and outside corners. A lightweight compound stretches a little further, a level 5 skim coat uses a lot more, and a garage left at level 2 uses roughly half as much. The calculator does the arithmetic for your job.
How much drywall mud per sheet
- All purpose ready-mix: about 0.32 gal per 4x8 sheet at level 4, from USG's 10 gal per 1,000 sq ft. National Gypsum gives 123 to 140 lb, or 9 gal, per 1,000 sq ft for its all purpose compound.
- Lightweight ready-mix: about 0.30 gal per sheet, from USG Plus 3 at 9.4 gal per 1,000 sq ft.
- Setting-type powder: about 1.7 lb per sheet, from USG Easy Sand at an average 52 lb per 1,000 sq ft, in 18 lb bags.
These are board-area figures: a sheet counts as 32 sq ft whether it is on a wall or a ceiling. Rooms with lots of outside corners, poor framing or wide gaps between sheets use more, and so does a first job, so round up.
Finish levels and how much mud each takes
- Level 2: tape embedded in compound and a coat over fasteners. Garages and areas behind tile. About half the mud of level 4.
- Level 3: one more coat over the joints. Under heavy texture. About three quarters.
- Level 4: two coats over the tape. The usual finish for painted walls with flat paint or a light texture, and the level the coverage figures describe.
- Level 5: level 4 plus a thin skim coat over the whole surface, for gloss paint or raking light. About half as much again.
The level 2, 3 and 5 figures are our estimate, scaled from the published level 4 coverage by the coats each level leaves out or adds. Manufacturers publish coverage for a typical finish only.
Ready-mix or setting-type?
Ready-mixed all purpose compound comes in 4.5 gallon pails and cartons and dries by evaporation, so each coat needs a day. Setting-type powder hardens by chemical reaction in a set time, 5 to 210 minutes depending on the product, which lets you put on several coats in one day and is the better choice for filling deep gaps. Many finishers tape with setting compound and top with ready-mix, which is easier to sand.
Frequently asked questions
Primary references
Manufacturer and industry guidance used to check this article.
- Sheetrock Brand All Purpose Joint Compound submittal (J1969)USG
- Sheetrock Brand Plus 3 Joint Compound data sheet (J498A)USG
- Sheetrock Brand Easy Sand setting-type joint compounds (J621)USG
- ProForm All Purpose joint compound, materials estimating and coverageNational Gypsum
- Sheetrock Brand gypsum panels installation and finishing guide (J371)USG
Product instructions, tested assemblies and local code take priority over general guidance.