🏠 Whole Room
📐 Known Area
Room dimensions
Doors & windows to deduct
Sheet size & waste
You'll need
0 sheets
waste included
Paintable area0 sq ft
With waste factor0 sq ft
Joint compound0 buckets
Joint tape0 rolls
Drywall screws0 lb
Estimated sheet cost
$0
$0
Mud assumes one 4.5-gal bucket per ~500 sq ft; tape assumes one 250 ft roll per ~500 sq ft; screws assume ~1.5 lb per 100 sq ft.
Whole room
Perimeter × height, with an option to add the ceiling — the standard way to estimate a full room.
Sheet size
4×8 sheets are easiest to handle solo; 4×10/4×12 reduce seams on taller walls but need more hands to install.
Doors & windows
Standard doors (~21 sq ft) and windows (~15 sq ft) are subtracted automatically so you don't over-buy sheets.
Waste factor
10% covers typical cuts and seams; complex ceilings or lots of corners may need 15%.