Wall studs in residential construction are most commonly spaced 16 inches apart on center, meaning the center of one stud is 16 inches from the center of the next. This spacing is standard because it provides good structural support and aligns well with drywall and insulation installation

. However, studs can also be spaced 24 inches apart, especially in exterior walls or newer homes where cost-saving and increased insulation are priorities. This wider spacing uses less wood but offers less structural strength compared to 16-inch spacing

. In some cases, stud spacing can be irregular due to construction variations, renovations, or the presence of doors and windows

. For reference, in Australia, the typical stud spacing is about 450 mm (approximately 18 inches) on center, which balances structural integrity and material efficiency

. In summary:

• 16 inches on center : Most common in interior and load-bearing walls.
• 24 inches on center : Common in exterior walls or for cost and insulation efficiency.
• Irregular spacing : Possible due to construction factors.
• Australian homes : Typically 450 mm (18 inches) on center.

This spacing standard helps ensure walls are strong, and materials like drywall fit properly. Always verify stud locations with a stud finder or measurement, as actual spacing can vary