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BuildRight
Wall length divided by stud spacing, plus one extra stud — the baseline count before openings and corners.
16 inches on-center is the traditional residential standard, sized to match standard 4×8 sheet goods evenly. 24-inch spacing ('advanced framing') uses less lumber and improves insulation but requires careful engineering to still meet load requirements.
Real framing needs additional studs at corners (typically 3), wall intersections, and around window and door openings (king studs, jack studs, headers) — this calculator gives the baseline field stud count for a plain wall run.
Studs needed
16
16 inches on-center is the standard residential spacing; 24 inches is common for advanced framing.
What you entered
Wall length in inches
20 × 12= 240 inStuds at 16" on-center, plus one extra
⌈240 ÷ 16⌉ + 1= 16 studsResult
Studs needed: 16
A 20 ft wall at 16" on-center needs 16 studs — add extra for corners, openings, and blocking.