Wall framing layout and quantity calculator

The layout starts with an end stud, then the selected centre marks measured from the outside left edge, and an end stud at the right. Full stud length subtracts one bottom plate and your top plates. A single opening replaces intersecting studs with two kings, two jacks and short cripple pieces. Window sills are included; a door opening deducts its width from the installed bottom plate.

Common North American layouts use 16-inch (406.4 mm) or 24-inch (609.6 mm) centres when permitted by the design. Dry dressed nominal 2×4 lumber is commonly 1.5×3.5 inches, approximately 38×89 mm; the face width here is the smaller dimension, not wall depth. Measure your actual stock.

Reference: NIST softwood lumber dimensions · Reference: AWC lumber studs

The result above uses these exact values. This snapshot is included when the page is printed so the output can be checked against the original measurements.

Outside wall length

3600 mm

Overall wall height

2400 mm

Actual stud face width

38 mm

Stud centres from left datum

400 mm

Plate thickness

38 mm

Number of top plates

2

Opening model

No opening

Waste allowance

10 %

Primary result: Full-height studs including kings: 10.

• Measure from the datum or reference edge described by this tool, and do not mix inside, outside and centerline dimensions.
• Keep inputs in the displayed units and preserve more precision than the final cutting or purchasing tolerance requires.
• When the result is close to a limit, verify it with a test piece, field measurement, manufacturer drawing or qualified project professional.

This quantity layout does not select structural stud spacing, header size, jack count, grade, bracing or connections. Enter dimensions from your approved design. It models one opening, one jack per side and no corners, intersections, blocking or sheathing. Linear lengths combine different member sizes and are not a stock-length cutting optimization.