Question 1

How do I calculate how many drywall sheets I need?

Accepted Answer

Measure the total wall and ceiling area in square feet, subtract doors and windows, then divide by the area of one drywall sheet. Add 10-15% waste. This tool does all of it for you automatically.

Question 2

What is the standard drywall sheet size?

Accepted Answer

The most common sheet is 4 x 8 feet (32 sq ft). Larger sheets include 4 x 10 (40 sq ft), 4 x 12 (48 sq ft) and 4 x 14 (56 sq ft) — fewer joints but harder to handle. The calculator supports all common sizes.

Question 3

How much joint compound and tape do I need?

Accepted Answer

A rough rule: 1 gallon of joint compound and 75 feet of tape per 100 sq ft of drywall. Screws: about 1 per square foot. The tool estimates all consumables plus total cost.

Question 4

Are my room measurements stored anywhere?

Accepted Answer

No. All calculations happen entirely in your browser. No data is sent to any server.