Whole-project calculator

Shed Material Calculator

Plan foundation, floor framing, walls, roof framing, cladding, and hardware for a rectangular backyard shed.

Quick presets

Inputs

1 Geometry and layout 1 group

Set the footprint and primary layout path before fine-tuning quantities and finishes.

Shed geometry

Shed Length (ft) Type it the way you measured it - 16' 6" or 16.5 both work. Shed Width (ft) Wall Height (ft)

2 Structure and support 3 groups

Open this stage after choosing a preset or locking the geometry baseline.

Foundation and floor

Foundation Type Skid floor keeps a framed wood floor above grade; slab mode switches to a simple concrete pad and hides the floor-framing inputs. Floor Height Above Ground (in) Lower clearance raises splash-back and rot exposure, so very low skid floors often justify pressure-treated framing. Skid Beam Size Floor Joist Size Floor Joist Spacing (in) Spacing is listed in inches on center (o.c.) — measured center to center from one joist to the next. Subfloor Material

Add a compacted gravel base Itemizes a compacted gravel base under the skids (base gravel by the ton and optional separator fabric); excavation, grading, and compaction labor are not included.

Wall framing and cladding

Wall Framing Size Siding Type

Roof

Roof Style Lean-to slopes across the shed width from a taller front wall down to the back wall; the tall-wall height is derived from wall height plus pitch. Roof Pitch (/12) A 6-in-12 roof rises about 6 in for every 12 in of horizontal run. Roof Framing Size Roof Sheathing Roof Covering Asphalt shingles include underlayment and drip edge; metal panels model ribbed steel over the same sheathing with ridge cap and screws (eave/rake trim priced separately). Eave Overhang (in) Rake Overhang (in) Rake is the sloped gable-end edge of the roof; rake overhang is how far the roof extends past that edge.

3 Openings and access 1 group

Add doors, windows, gates, and stairs only after the main structure is stable.

Openings

Door Count (doors) Doors are modeled as framed rough openings; prehung door units, style, and hardware are priced separately. Door Width (ft) Large shed doors and windows still need enough wall width between openings for studs, trim, and corner return framing. Door Height (ft) A common residential door baseline is about 6 ft 8 in. Window Count (windows) All windows in this calculator share one rough-opening size. Mixed window sizes need a field-level takeoff. Window Width (ft) Window Height (ft)

4 Finish and pricing 2 groups

Refine finish and region only after the rest of the plan is clear.

Fasteners and hardware

Add Uplift Connector Allowance Adds a planning allowance for roof-to-wall uplift connector ties; final connector schedule, anchorage, and wind exposure still need local review.

Regional settings

State / Pricing Region

Planning rules & code notes U.S. planning assumptions, pricing coverage, and permit-sensitive notes for this calculator.

This calculator uses common IRC-style residential assumptions for spacing, waste, and coverage. Confirm site conditions, spans, and local code before ordering.
Regional pricing currently covers selected states. If your saved state falls outside coverage, the calculator keeps it visible and falls back to calculator default pricing instead of silently switching regions.

Reset inputs

Use this button to recalculate without JavaScript or create a complete, shareable page URL.

2D plan

Schematic assembly plan

Schematic shed view of a 16 ft x 12 ft skid-floor shed with 4 skid runners, 13 floor joists, and 10 rafter pairs. Treat the preview as a planning model rather than a permit set or anchorage detail.

3D assembly

Interactive 3D

Rotate the model, toggle assemblies, and inspect labeled material callouts.

Shed footprint 192 sq ft

Foundation Skid floor, 4 runners / 16 pier blocks

Floor framing 2x6 @ 16 in o.c. (13 joist lines)

Subfloor 7 sheets

Material theme

Garden SmartSide

LP SmartSide-style panel siding with the mainstream backyard shed palette.

Material tier comparison

Price this same shed with each siding type, using your current inputs.

Plan details & review

More project facts 14

Wall framing 2x4 walls / 67 studs

Headers 3 openings / double 2x6

Wall sheathing Not required

Roof framing 2x6 rafters / 10 pairs

Roof pitch 6 / 12

Roof area 258 sq ft

Roof covering 9 shingle bundles

Gross wall area 484 sq ft

Net wall area 436 sq ft

Housewrap Not required

Siding LP SmartSide structural panels (15 units)

Corner trim 4 pieces

Fasteners 1 framing nail box / 4 exterior fastener boxes

Pricing region Calculator default pricing

Planning assumptions

Material quantities and planning BOM for Shed Material Calculator based on selected inputs.

Planning assumptions · 8

Estimator scope is limited to rectangular single-room sheds with a gable roof rather than permit-ready engineering, truss design, or loft framing.
Wall stud spacing is modeled at 16 in o.c., while roof rafters use a conservative fixed spacing based on the resolved roof framing package.
Door and window headers are modeled as double 2x6 members with an assumed spacer layer that is not itemized as a separate specialty panel SKU.
T1-11 and LP SmartSide panel paths are treated as structural siding in this calculator, so separate wall sheathing and housewrap are not added on those paths.
Skid-floor paths assume graded bearing or site-prepped support points, but gravel pad excavation, geotextile, and compacted aggregate are not itemized in this shed calculator.
Property setback rules and HOA covenants vary by jurisdiction and may restrict shed size, placement, or exterior finish. Confirm local requirements before building.
Asphalt shingle roofing automatically includes underlayment and drip edge, but final ventilation, flashing, and local code details still require field review.
Uplift connectors such as hurricane ties or hold-downs are not itemized unless you turn on the planning allowance, so local wind exposure and anchorage review still belong to field and permit review.

Not included / Trade review

4 total scope notes to read before ordering or contractor handoff.

How pricing works

Where each price comes from, when it was checked, and what the formulas assume.

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Compare quotes from contractors near you — or just save this plan, share it, and export a PDF for your records.

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Material list

Your build list

Each line shows a purchase quantity, a coverage amount, or a planning allowance - the line says which. Check pack sizes and your site conditions before you order.

Material	Assembly	Unit	Qty	Unit price	Total	Source
4x6 skid runners 4x6 \| Stock 16 ft \| Pressure TreatedActual 3.5 in thick x 5.5 in wide	foundation and floor	board	5	$59.78	$298.90	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 5 Quantity type: Purchase quantity Purchase quantity: 5 Coverage: 4 skid runners at about one runner per 4 ft of shed width, converted to 16 ft stock with framing waste. Waste factor: 8%
Pier blocks Precast pier block \| Foundation Support	foundation and floor	block	16	$9.32	$149.12	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/05/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is an installed or coverage basis, not a package count. Convert it to supplier pack sizes. Qty: 16 Quantity type: Installed / coverage quantity Installed / coverage quantity: 16 Coverage: 4 supports per runner at roughly 6 ft spacing along the shed length. Waste factor: 5%
2x6 floor joists Note: Low floor clearance switched the floor framing path to pressure-treated stock.2x6 \| Stock 12 ft \| Pressure TreatedActual 1.5 in thick x 5.5 in wide	foundation and floor	board	15	$13.98	$209.70	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 15 Quantity type: Purchase quantity Purchase quantity: 15 Coverage: 13 floor-joist lines spanning the shed width at 16 in o.c., converted to 12 ft stock. Waste factor: 8%
2x6 floor rim boards 2x6 \| Stock 16 ft \| Pressure TreatedActual 1.5 in thick x 5.5 in wide	foundation and floor	board	4	$19.28	$77.12	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 4 Quantity type: Purchase quantity Purchase quantity: 4 Coverage: Floor perimeter rim boards converted to 16 ft stock with framing waste. Waste factor: 8%
23/32 in T&G OSB subfloor 23/32 in T&G OSB \| Structural Panel	foundation and floor	sheet	7	$20.48	$143.36	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/01/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 7 Quantity type: Purchase quantity Installed / coverage quantity: 6 Purchase quantity: 7 Waste quantity: 1 Coverage: Shed floor area with subfloor waste. Waste factor: 8%
2x4 wall studs 2x4 \| Stock 10 ft \| Framing LumberActual 1.5 in thick x 3.5 in wide	wall framing and openings	board	67	$4.98	$333.66	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 67 Quantity type: Purchase quantity Purchase quantity: 67 Coverage: Perimeter stud layout at 16 in o.c. with gable-wall and opening allowances. Waste factor: 8%
2x4 double top plates 2x4 \| Stock 16 ft \| Framing LumberActual 1.5 in thick x 3.5 in wide	wall framing and openings	board	8	$11.15	$89.20	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 8 Quantity type: Purchase quantity Purchase quantity: 8 Coverage: Double top-plate runs converted to stock length with framing waste. Waste factor: 8%
2x4 bottom plates 2x4 \| Stock 16 ft \| Framing LumberActual 1.5 in thick x 3.5 in wide	wall framing and openings	board	4	$11.15	$44.60	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 4 Quantity type: Purchase quantity Purchase quantity: 4 Coverage: Standard 2x4 bottom plates around the framed floor perimeter. Waste factor: 8%
Double 2x6 headers Note: Modeled as double 2x6 headers with an assumed spacer layer inside the assembly.Double 2x6 + 1/2 in OSB spacer \| Stock 8 ft \| Framing LumberActual 1.5 in thick x 5.5 in wide	wall framing and openings	board	4	$5.55	$22.20	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 4 Quantity type: Purchase quantity Purchase quantity: 4 Coverage: Double 2x6 headers for 3 openings with bearing allowance and framing waste. Waste factor: 8%
2x6 shed rafters 2x6 \| Stock 8 ft \| Framing LumberActual 1.5 in thick x 5.5 in wide	roof framing and covering	board	21	$5.55	$116.55	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 07/20/2026Retailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 21 Quantity type: Purchase quantity Purchase quantity: 21 Coverage: 10 rafter pairs across the roof length at 24 in o.c., converted to stock length with framing waste. Waste factor: 8%
7/16 in OSB roof deck 7/16 in OSB \| Structural Panel	roof framing and covering	sheet	9	$9.72	$87.48	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/01/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 9 Quantity type: Purchase quantity Purchase quantity: 9 Coverage: Total sloped roof area with sheathing waste. Waste factor: 10%
Roof underlayment 1000 sq ft roll \| Roofing	roof framing and covering	roll	1 covers 271.31 sq ft	$114.00Not editable: priced as a package	$114.00	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/05/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 1 Quantity type: Purchase quantity Installed / coverage quantity: 258.39 Purchase quantity: 1 Waste quantity: 12.92 Coverage: Asphalt shingle underlayment coverage across both roof planes. Waste factor: 5%
Architectural shingle bundles Note: Asphalt shingles are the only modeled roof covering in this first shed-calculator release.33.33 sq ft bundle \| Roofing	roof framing and covering	bundle	9 covers 284.23 sq ft	$44.47Not editable: priced as a package	$400.23	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/01/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 9 Quantity type: Purchase quantity Installed / coverage quantity: 258.39 Purchase quantity: 9 Waste quantity: 25.84 Coverage: Roof area converted to shingle bundles with waste. Waste factor: 10%
Drip edge 10 ft piece \| Roof Trim	roof framing and covering	piece	7	$5.28	$36.96	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/01/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 7 Quantity type: Purchase quantity Purchase quantity: 7 Coverage: Eaves plus rakes converted to 10 ft drip-edge pieces. Waste factor: 5%
Roofing nails Roofing nail box \| Fasteners	roof framing and covering	box	2	$6.47	$12.94	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/01/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 2 Quantity type: Purchase quantity Purchase quantity: 2 Coverage: Coverage allowance for shingles and underlayment attachment. Waste factor: 5%
LP SmartSide panels 4x8 structural panel \| Structural Siding	cladding and weather barrier	sheet	15	$45.98	$689.70	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/01/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 15 Quantity type: Purchase quantity Purchase quantity: 15 Coverage: Net exterior wall area after deducting doors and windows, with siding waste. Waste factor: 10%
Corner trim 10 ft piece \| Trim	cladding and weather barrier	piece	4	$19.64	$78.56	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/05/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 4 Quantity type: Purchase quantity Purchase quantity: 4 Coverage: Vertical shed corners plus rake return allowance converted to 10 ft trim pieces. Waste factor: 5%
Framing nails Common framing nail box \| Fasteners	fasteners and hardware	box	1	$57.28	$57.28	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/05/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 1 Quantity type: Purchase quantity Purchase quantity: 1 Coverage: Conservative framing-nail allowance across floor, wall, and roof framing assemblies. Waste factor: 5%
Exterior-rated fastener boxes Note: Pressure-treated contact paths are always modeled with corrosion-resistant exterior fasteners.HDG / exterior fastener box \| Fasteners	fasteners and hardware	box	4	$11.97	$47.88	Home Depot Shopping-ready Price source: Retailer pricePrice as of: 06/05/2026 — price may have changed - verify before orderingRetailer: Home Depot
Quantity basis The visible row quantity is a purchase or ordering quantity. Qty: 4 Quantity type: Purchase quantity Purchase quantity: 4 Coverage: Exterior-rated / HDG fastener allowance for treated-contact framing and shed exterior scope. Waste factor: 5%

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Estimated materials total$3,009.44

19 priced lines / 19 total lines

Project material guide

2026 U.S. Shed Material Guide

Switch between tabs to compare nominal sizes, actual sizes, common uses, and planning rules for this project.

Shed Foundation and Floor Paths

This calculator models a simple rectangular shed either on a slab-on-grade path or on skids plus a framed wood floor. It does not replace engineered foundation design or itemize gravel-pad / geotextile site prep.

Path	Main members	Calculator rule	Typical use
Skid floor	4x4 or 4x6 skids, pier blocks, 2x4 or 2x6 joists, 23/32 subfloor	About one skid runner every 4 ft of shed width. Floor framing under 18 in of exposed-soil clearance is upgraded to PT in this calculator.	Common movable / backyard utility sheds.
Slab-on-grade	Ready-mix concrete, PT sill plates, sill gasket, anchor bolts	Wall bottom plates are modeled as PT members matching the resolved wall framing size on slab paths.	Permanent slab sheds and site-built storage rooms.

Wall Framing and Opening Rules

Walls default to 2x4 framing. Taller or more conservative paths may move to 2x6 framing. Door and window headers are modeled as double 2x6 + OSB spacer.

Item	Default	Conservative path	Calculator note
Wall studs	2x4	2x6	The calculator can step up to 2x6 for taller walls or more conservative framing.
Bottom plates	Match the resolved wall framing size on skid floors	PT 2x4 or 2x6 on slab	Slab-contact paths automatically force PT bottom plates, and wider wall paths keep wider plates.
Headers	Double 2x6	Same	Header spacers are assumed inside the header package rather than itemized as a separate specialty SKU.

Roof Framing and Covering Rules

This version models a gable roof with asphalt shingles only.

Item	Default	Calculator rule	Common note
Rafters	2x6	2x4 only stays on short, light-duty spans. Larger widths are upgraded to 2x6.	Verify span, snow, wind, and any required uplift connectors against local requirements.
Roof sheathing	7/16 in OSB	15/32 in plywood optional	Quantities include sheathing waste.
Shingles	Architectural asphalt shingles	Minimum modeled pitch is 2/12	Underlayment and drip edge are included with the shingle path, and 2/12 to under-4/12 roofs double underlayment coverage in this calculator.

Siding and Weather Barrier Rules

T1-11 and LP SmartSide panels are treated as structural siding in this calculator, while vinyl and fiber cement automatically add wall sheathing and housewrap.

Siding path	Separate wall sheathing	Housewrap	Calculator note
T1-11	No	No	Modeled as structural panel siding.
LP SmartSide panel	No	No	Modeled as structural panel siding.
Vinyl siding	Yes	Yes	Auto-adds 7/16 OSB wall sheathing plus housewrap.
Fiber-cement lap	Yes	Yes	Auto-adds 7/16 OSB wall sheathing plus housewrap.

This calculator follows conservative U.S. backyard-shed rules for skid floors, slab bottoms, wall framing, structural vs non-structural siding, and asphalt-shingle roofs. It is a planning BOM, not permit-ready engineering.