A 10 m partition 2.7 m high with one door is 25.1 m² net. Boarded both sides with 1200 × 2700 mm boards it needs 18 boards (with 10%), 20 studs at 600 mm, 20 m of floor and head track, about 540 screws and 48 m of joint tape.
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Generated with myconstructioncalculator.com. Estimates for planning and ordering only; verify against drawings and specifications.
Formulas
Boards = ⌈net area × faces × layers ÷ board area × (1 + waste)⌉Studs = ⌈length ÷ spacing⌉ + 1 + 2 per openingTrack = 2 × length (floor and head)
Worked Example
10 m × 2.7 m, one 0.9 × 2.1 m door, both faces, one layer, 1200 × 2700 boards, studs at 600:
Net = 27 − 1.89 = 25.1 m²
Boards = ⌈25.1 × 2 ÷ 3.24 × 1.1⌉ = 18
Studs = 17 + 1 + 2 = 20; track = 20 m
Screws ≈ 540; tape ≈ 48 m
Studs for Common Wall Lengths
Studs along the wall only, before openings and corners.
Wall length
Studs at 16 in (400 mm)
Studs at 24 in (600 mm)
8 ft (2.4 m)
7
5
10 ft (3.0 m)
9
6
12 ft (3.6 m)
10
7
16 ft (4.8 m)
13
9
20 ft (6.0 m)
16
11
Frequently Asked Questions
How many plasterboards do I need for a partition?
Net wall area × number of faces × layers ÷ board area, plus about 10% for cuts. A 1200 × 2400 board covers 2.88 m².
How far apart are drywall studs?
Usually 600 mm (24 in) or 400 mm (16 in) centres. Closer spacing suits tall walls, heavy tiles or thin boards.
How many screws per board?
Roughly 25–35 per 1200 × 2400 board at typical spacing: closer at edges than in the field.
How many studs do I need for a 16 foot wall?
13 studs at 16 in centres (16 × 12 ÷ 16 = 12 spaces, plus 1), or 9 studs at 24 in centres. Add about 2 extra studs for each door or window, and extra at corners.
How many studs do I need?
Wall length in inches ÷ stud spacing, rounded up, plus 1 for the end. Then add about 2 studs per opening and any corner or junction studs your wall needs.
