Projometry
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Deck Material & Cost Calculator

Estimate decking, framing, footings, concrete, hardware, and an editable material budget from one deck layout.

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Project details

Enter deck dimensions, decking, framing, and footing assumptions.

What are you estimating?
Deck dimensions
Decking layout
Board direction

Deck joists are assumed to run perpendicular to the decking.

Decking material
Joist span
12 ft
Structural sizing not selected
Framing quantities are planning estimates. Joist size, beam size, post spacing, and allowable spans must be verified.

One footing is assumed for each post. Enter the planned cylindrical footing size.

Footing diameter and depth depend on load, soil, frost depth, deck height, and local building code. These dimensions are not structural recommendations.

Build your budget

Start with a preset and replace prices with your local supplier pricing.

Preset prices are planning placeholders rather than current retailer quotes.
Planning budget
$1,674
Includes 10% budget contingency
192 sq ft deck
Decking
$522
Framing
$722
Concrete
$182
Hardware
$96
Footings & concrete

Concrete estimate

Footings
6
Each footing
12" × 36"
Concrete volume
14.1 cu ft
0.52 cu yd
Selected purchase
26
80-lb bags including 10% waste
Equivalent bag quantities
40-lb bags
52
60-lb bags
35
80-lb bags
26
Cost breakdown

Estimated material cost

Deck boards
29 × $18
$522
Decking fasteners
744 estimated
$67
Joists
13 × 16-ft × $24
$312
Rim / band boards
1 × 16-ft stock boards
$24
Ledger boards
1 × 16-ft stock boards
$24
Planned beam assemblies
2 × $85
$170
Planned posts
6 × $32
$192
Joist hangers
13 estimated
$29
Concrete
26 × 80-lb bags
$182
Estimated materials
$1,522
10% contingency
$152
Planning budget
Materials plus contingency
$1,674
Shopping list

Estimated materials

Decking
Deck boards
16-ft × 5.5-in actual width
29
Decking linear footage
Purchased stock
464 ft
Board courses
Across 12 ft
26
Framing
Joists
12-ft span at 16 in O.C.; 16-ft stock
13
Joist linear footage
Approximate total
156 ft
Rim / band board
Outer rim across joist ends; 1 stock boards at 16 ft
16 ft
Ledger board
1 stock boards at 16 ft
16 ft
Planned beam assemblies
User-entered planning quantity
2
Planned posts
User-entered planning quantity
6
Concrete
Footings
12-in diameter × 36-in depth
6
80-lb concrete bags
10% concrete waste included
26
Concrete volume
Before concrete waste
14.1 cu ft
Hardware
Decking fasteners
2 per board / joist intersection + 10% overage
~744
Joist hangers
One hanger per joist at the ledger
~13
Planning estimate only. Structural spans, footing dimensions, frost protection, soil bearing capacity, connections, and local code requirements must be verified before construction.
About the estimate

How the footing calculation works

Projometry assumes one cylindrical concrete footing for each post. Concrete volume is calculated from the entered footing diameter and depth.

The selected concrete waste allowance is added before converting the required volume into bag quantities.

Approximate bag yields used for planning are 0.30 cubic feet for a 40-pound bag, 0.45 cubic feet for a 60-pound bag, and 0.60 cubic feet for an 80-pound bag.

These calculations estimate material quantity only. Required footing dimensions vary with loads, soil, frost depth, deck geometry, and applicable building codes.

Projometry
Verify structural requirements, material prices, and local codes before purchasing or building.