Calculate the amount of joint compound (drywall mud) needed for taping and finishing your drywall project. This calculator estimates the compound needed for each coat: tape coat, filler/second coat, and finish coat, based on the area of drywall and number of joints.
Enter Your Measurements
Results
Total Joint Compound
4.8
gallons
4.5-Gallon Buckets
2
buckets
Tape Coat
1.6
gallons
Second Coat
1.9
gallons
Finish Coat
1.4
gallons
Linear Feet of Joints
256
ft
Formula
How to Use This Calculator
How to Use
- 1
Enter the total square footage of drywall to be finished.
- 2
Enter the number of drywall sheets (this helps estimate joint length).
- 3
Enter the number of coats (3 is standard: tape, fill, finish).
Frequently Asked Questions
Frequently Asked Questions
How many coats of mud on drywall?
How much joint compound per sheet of drywall?
In-Depth Guides
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About This Calculator
This calculator uses the formula: Tape Coat = Area ÷ 320 gal | Second Coat = Area ÷ 270 gal | Finish Coat = Area ÷ 350 gal. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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