Framing Calculator

Stud count, plates, and blocking for a wall. Handles 16 and 24 inch on center with corners and openings.

Quick reference: studs per wall length

Wall16 in OC24 in OC
10 ft9 studs6 studs
20 ft16 studs11 studs
40 ft31 studs21 studs
100 ft76 studs51 studs

Field studs only. Add corners, channels, and opening framing on top.

Framing estimating FAQ

How many studs do I need for a wall?

Divide the wall length in inches by the spacing, then add one for the end stud. A 40 foot wall at 16 inches on center is 480 divided by 16 plus 1, which is 31 field studs before corners and openings.

How many studs are in a 10 foot wall?

Nine at 16 inches on center, six at 24 inches on center. That is field studs only, before corners and door or window framing.

How much plate material do I need?

Figure the wall length times three for a double top plate and single bottom plate. A 40 foot wall needs 120 feet of plate stock, or eight 16 foot pieces.

How many studs per opening?

Budget about three extra studs per door and four per window: king studs each side, jack or trimmer studs under the header, plus cripples above and below.

Is 16 or 24 inch on center better?

Sixteen is standard for load bearing walls and gives flatter drywall. Twenty four saves material and is common in non-load-bearing partitions and advanced framing, but needs thicker drywall or careful hanging to avoid waves.

Counting wall runs off the plans?

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