Stud Wall Calculator
Estimate the timber and plasterboard for a stud partition wall.
Timber shown as total linear metres of CLS/stud (verticals + head & sole plates + noggins). Plasterboard at 2.4 × 1.2 m boards. Add fixings, insulation and an allowance for cuts.
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How to use the stud wall calculator
Enter the wall length and height and choose your stud spacing, and the calculator returns the number of studs, the length of head and sole plates, and the plasterboard sheets you need. It takes the guesswork out of ordering timber for a partition wall.
Frequently asked questions
What spacing should stud wall timbers be?
Studs are usually set at 400 mm or 600 mm centres. 400 mm gives a stronger wall and better support for plasterboard edges; 600 mm uses less timber.
How many studs do I need for a stud wall?
Divide the wall length by the stud spacing and add one for the final stud, plus extras for openings, noggins and end fixings. The calculator also works out the plates and boards.
What timber size is used for stud walls?
Internal stud walls are commonly built from 63×38 mm or 75×50 mm CLS timber, with plasterboard fixed to each side.