How many studs do I need for a wall?

Divide wall length in inches by the spacing (16 or 24), add one, then add extra for corners and openings.

Is 16 or 24 inch stud spacing better?

16 inch spacing is standard for load-bearing walls; 24 inch is allowed for some non-load-bearing walls and saves lumber.

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How many studs do I need for a wall?: Divide wall length in inches by the spacing (16 or 24), add one, then add extra for corners and openings.
Is 16 or 24 inch stud spacing better?: 16 inch spacing is standard for load-bearing walls; 24 inch is allowed for some non-load-bearing walls and saves lumber.