Shed Calculator

Estimate framing lumber, sheathing, siding, and roofing for a wood-frame shed — or compare against metal and vinyl kit prices for the same footprint.

Shed Calculator

Shed Length (ft)

Shed Width (ft)

Wall Height (ft)

Roof Pitch (rise/12)

Wood Pricing (edit to match local rates)

Stud / Plate ($/pc)

Floor Joist ($/pc)

Rafter ($/pc)

Sheathing ($/sheet)

Siding ($/sheet)

Roofing ($/sheet)

Shed Structure

Floor Area

120 sq ft

12' × 10'

Wall Area

352 sq ft

8' walls, 4 sides

Roof Area

126 sq ft

4/12 pitch

Best Total Cost

$1,600.00

Metal Kit

Wood Frame Material List

Wall Studs: 41 pcs$246.00

Plates: 24 pcs$144.00

Floor Joists: 9 pcs$81.00

Rafters: 14 pcs$140.00

Sheathing (floor+wall+roof): 19 sheets$570.00

Siding: 11 sheets$385.00

Roofing: 4 sheets$128.00

Wood Frame Total$1,694.00

Purchase Option	Quantity	Est. Cost
Wood Frame	64 framing pcs	$1,694.00
Metal KitBest value	1 kit	$1,600.00
Vinyl/Resin Kit	1 kit	$3,000.00

Cheapest option: Metal Kit at $1,600.00A metal kit is typically the most affordable option for a 120 sq ft shed. Assembly is straightforward, but metal sheds offer limited insulation and can be prone to condensation.

This is a material estimate only. Wood-frame costs cover framing lumber, sheathing, siding, and roofing but exclude fasteners, doors, windows, foundation, and labor. Kit prices are approximate averages — actual prices vary by brand and retailer.