Calculators - Estimators - Template Generators
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Deck Length Bearer Thickness
Deck Width Bearer Depth
Stump Width
Stump Height Requires longer stumps to maintain deck height (Stumps Notched)
Stump Centers Bearer Setin Inner
Stump Set In Bearer Setin Outer
  Bearer Centers
Footing Diameter Joist Thickness
Footing Depth Joist Depth
Board Width Joist Centers
Board Thickness Joist Set In allows Deck Board Overhang at each end of deck End Joists Setin
Board Gap Ground Fall in Width
Centers Adjusted to Fit Evenly Centers Adjusted to Fit Evenly  

Deck Cost Calculator Enter Lumber Costs to auto re-calculate.

Email Calculation Creates a link to save or Email current calculation


... Enter Linear Costs

Total Deck Height   (Stump base to board top)


STUMP Running set-out points along Deck ~ along Bearer (to near side of each stump)

STUMP Running set-out points across Deck ~ along Joist from Inside (to near side of each stump)

Fall in Width


BEARER Running set-out points, across Deck ~ along Joist from inner side (to near side of each bearer)


JOIST Running set-out points along Bearer (to near side of each joist)

Deck Boards

      Mark Every Boards.  

See also: Deck and Floor Board Quantity and Spacing Calculator for more detailed floor board spacing and gap calculations.

BOARD Running set-out points. Select board multiples to set out board placement.

Cepco BoWrench Cepco Tool BW-2 BoWrench Decking Tool

The BoWrench is a tool for both professional deck builders and do-it-yourself builders. Made with heavy-gauge steel, the BoWrench gives you a fast, one-person way to straighten decking boards, which are often warped.

To operate the BoWrench, simply fit the tool on a joist, swing the lever arm, and release, pulling or pushing the boards into alignment.

When the handle is perpendicular, the tool locks in place, holding the board securely and leaving your hands free to drive in nails or screws. With the BoWrench, you'll save time, create a longer-lasting surface, and maximize your materials.

Enter Costs per Linear Foot and % waste

Stumps + % Waste @ $ ft
Bearers + % Waste @ $ ft
Joists + % Waste @ $ ft
Boards + % Waste @ $ ft

Enter cost per linear foot and wastage % for Stumps, Bearers, Joists and Boards to Calculate individual and Total Costs. Linear feet and cost are auto updated when the deck is re-calculated, with individual costs for stumps, bearers and joists displayed in each section. Hit + and - buttons to open or close spacing, re-calculating the deck to find how different spacing options effect cost and materials.

After adjusting individual spacings (add or subtract stumps, bearer, joist etc), mouse over newly calculated 'Total Cost' results to see previous cost and cost difference. You can instantly see how much extra it will cost to reduce spacings and add stumps, bearers, joists etc. After entering linear costs, hit the + and - buttons under the top diagram to re-calculate deck and total cost, and mouse over cost to see difference.

Out of Square If your deck is slightly out of square (different widths), calculate results for both widths, and set out each end to suit. If necessary, adjust number of deck boards to match in both calculations, and see if different board gaps at each end of deck are acceptable, compared to equal gaps and cutting the last board at an angle. Use the widest dimensions for linear quantities.

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Create PDF files to print diagrams on current page. Print large images over multiple pages Printing to Scale Help and Plan Printing.

Slider Controls To fine tune Slider Controls click to select and use (cursor) keyboard keys.

Use your iPad or Android Tablet On-Site Your iPhone or Android is a valuable On-Site tool!
Lay your device on an angled surface (roof ?) to directly measure angles and automatically calculate Roofing and Pitch Angle Apps.

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All calculators on this site are GEOMETRIC only. Check loacl regulations for sizes, spacings and all engineering requirements.

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