Drywall Mud Calculator
Joint compound needed for drywall seams.
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ⓘ Live results
Results
- Joint compound needed
- 20 gal
- 5-gallon buckets
- 4
- Approx weight
- 190 lb
Quick answer
Joint compound need is roughly the wall area divided by a coverage rate, scaled by the number of coats.
gallons = (area x coats) / coverage rate
How to use the Drywall Mud Calculator
- 1Enter the total drywall area to be finished.
- 2Set the number of coats — 3 (tape, fill, finish) is standard.
- 3Buy compound in the bucket sizes shown, rounding up.
Worked example
Using the values the calculator loads with:
Inputs
- Drywall area1000 sq ft
- Number of coats3
- Coverage per gallon per coat150 sq ft
Results
- Joint compound needed20 gal
- 5-gallon buckets4
- Approx weight190 lb
Frequently asked questions
How many coats of mud do I need?
Three coats is standard: embedding coat, fill coat and finish coat, each sanded between.
Does level of finish matter?
Yes — level 5 finishes for glossy paint use more compound and more coats than a garage-level finish.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.