🧱 Drywall Calculator

Free drywall material calculator for gypsum board/sheetrock/plasterboard. Calculate boards, metal studs, tracks, screws, joint compound & tape. 2D/3D visualization. Works with metric and imperial measurements.

πŸ”² Porcelain Tile Calculator πŸ—οΈ Wall / Partition πŸ”² Suspended Ceiling

πŸ“ How to Calculate Drywall Materials

Accurate drywall calculation ensures you have the right amount of gypsum boards, profiles, screws, and finishing compounds for your project. This calculator accounts for waste, cut optimization, and all necessary accessories.

🧱 Board Calculation

Boards per row = Surface width Γ· Board width (1.2m). Rows = Height Γ· Board height (2.4m). Total Γ— waste factor.

πŸ“ Profiles & Structure

C-studs spaced at 40 or 60cm centers. U-channels (runners) at top and bottom. Add corner studs for intersections.

πŸ”© Screws & Fasteners

Standard: 28 screws per board (12/mΒ²). Use #6Γ—1" for single layer, #6Γ—1-5/8" for double layer. Space 15-20cm on studs.

🎨 Finishing Materials

Joint compound: ~1.5 kg/mΒ² (3 coats). Paper tape for flat joints. Corner beads for external angles. Primer before painting.

πŸ“Š Drywall Materials Reference

Material Standard Size Coverage Notes
Standard Board1.2Γ—2.4m2.88 mΒ²Walls, general use
Moisture Resistant1.2Γ—2.4m2.88 mΒ²Bathrooms, kitchens
Fire Resistant1.2Γ—2.4m2.88 mΒ²Firewalls, kitchens, garages
C-Studs2.44-3.0m60cm o/cVertical framing members
U-Channels3.0mβ€”Top & bottom runners
Joint Compound25 kg bag~16 mΒ²3 coats: tape, fill, finish

πŸ“‹ Quick Reference Calculations

How many drywall sheets for a 10ft Γ— 8ft wall?

3 sheets of 4ft Γ— 8ft (1.2m Γ— 2.4m) per side. For double-sided partition: 6 sheets. Formula: Area Γ· 32 sq ft per sheet.

How many studs for a 16ft wall?

With 16-inch spacing: 13 studs. With 24-inch spacing: 9 studs. Formula: (Wall length Γ· spacing) + 1.

How many screws per drywall sheet?

Approximately 28-32 screws per 4ftΓ—8ft sheet (every 8 inches on edges, every 12 inches in field).

❓ Frequently Asked Questions about Drywall

How do I calculate how many drywall boards I need?

Divide your wall area by the board area (1.2m Γ— 2.4m = 2.88mΒ²), then add 10% for waste and cuts.

How many screws do I need per board?

Approximately 28 screws per standard board (12 screws per mΒ²). Place them every 15-20cm along the studs.

What spacing should I use for studs?

Standard spacing is 60cm (24") for walls and 40cm (16") for ceilings or high-load walls.

How much joint compound do I need?

Approximately 1.5 kg/mΒ² for 3 coats (taping, filling, finishing). A 25kg bag covers about 16mΒ².

When should I use two layers of drywall?

Use double layers for fire-rated walls, soundproofing, or high-impact areas like hallways.