Drywall Sheet Estimator
Room Surface Geometry & Deductions
Material & Surface Area Output
Area Specification
Surface Sq Ft
Total Area With Waste
Recommended Buy
Ceiling Surface Area
192 ft²
Wall Surface Area
448 ft²
Net Total Surface Area
600 ft²
Required Drywall Sheets
21 Sheets
Ancillary Materials Checklist: 21 lbs screws · 152 linear ft tape
✔ ESTIMATED
Standard Drywall Volume Formulas
This drywall calculator divides your structural space into geometric planes and deducts standard structural openings (like standard doors = 20 sq ft, windows = 15 sq ft):
Geometric Area Calculations:
Ceiling Area = Length × Width
Wall Area = 2 × (Length + Width) × Ceiling Height
Total Net Area = (Ceiling Area + Wall Area) - Deductible Openings
Required Sheets = Ceil( (Total Net Area × (1 + Waste%)) ÷ Sheet Coverage Area )
Ceiling Area = Length × Width
Wall Area = 2 × (Length + Width) × Ceiling Height
Total Net Area = (Ceiling Area + Wall Area) - Deductible Openings
Required Sheets = Ceil( (Total Net Area × (1 + Waste%)) ÷ Sheet Coverage Area )
Drywall Sheet Dimension Profiles
| Sheet Sizes | Surface Area (Sq Ft) | Standard Drywall Thickness | Primary Application |
|---|---|---|---|
| 4' × 8' Sheet | 32 sq ft | 1/2 inch (Standard) | Standard residential walls & ceilings. |
| 4' × 12' Sheet | 48 sq ft | 1/2 or 5/8 inch | Commercial spaces, minimizes butt-joints. |
| 5/8" Firecode (Type X) | 32 / 48 sq ft | 5/8 inch (Thick) | Garages, boiler rooms, shared condo walls. |
| Greenboard (Moisture Resistant) | 32 sq ft | 1/2 inch | Bathrooms and high humidity spaces. |