Stud Calculator

Calculate the number of studs needed to frame a wall. Enter the wall length and stud spacing to determine how many studs, top plates, and bottom plates you need. The calculator includes extra studs for corners, intersections, and cripple studs around openings.

Enter Your Measurements

Wall Length(ft)

Wall Height(ft)

Stud Spacing(in OC)

Number of Corners

Number of Doors

Number of Windows

Results

Total Studs

studs

Regular Studs

studs

Plate Boards

boards

Top Plate Boards

boards

Bottom Plate Boards

boards

Headers Needed

headers

Formula

Regular Studs = (Wall Length × 12 ÷ Spacing) + 1 | Total = Regular + (Corners × 3) + (Doors × 3) + (Windows × 4)

How to Use This Calculator

How to Use

1
Enter the wall length in feet.
2
Enter the wall height (8 ft standard, use pre-cut studs of 92-5/8 inches).
3
Select stud spacing (16 inches OC for load-bearing, 24 OC for non-load-bearing).
4
Enter the number of corners, doors, and windows for additional studs.

Frequently Asked Questions

How many studs do I need per foot of wall?

At 16-inch on center spacing, you need approximately 0.75 studs per linear foot of wall. At 24-inch spacing, you need approximately 0.5 studs per foot. Add extra for corners and openings.

What is the standard stud spacing?

Load-bearing walls use 16-inch on center stud spacing. Non-load-bearing (partition) walls can use 24-inch spacing. Some advanced framing techniques use 24-inch spacing with 2x6 studs for exterior walls.

How long are pre-cut studs?

Pre-cut studs are 92-5/8 inches long (for 8-foot ceilings) and 104-5/8 inches (for 9-foot ceilings). These lengths account for the thickness of three plates (one bottom, two top).

Related Calculators

Plywood Calculator

Board Feet Calculator

Drywall Calculator

Insulation Calculator

About This Calculator

This calculator uses the formula: Regular Studs = (Wall Length × 12 ÷ Spacing) + 1 | Total = Regular + (Corners × 3) + (Doors × 3) + (Windows × 4). All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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