Deck Calculator
Enter your deck dimensions, board details, joist spacing, waste percentage, and material costs. The calculator will estimate the number of deck boards, joists, and total cost for your deck project.
About Our Free Deck Board & Framing Calculator
Designing a new deck? Our Deck Board & Framing Calculator helps you figure out how many deck boards and joists you’ll need, factoring in dimensions, waste, and spacing. Simply input your deck length and width, board details, joist spacing, and costs. The tool calculates deck boards needed, joists needed, and an estimated total cost.
How It Works (Simplified):
- 1. We convert deck length and width to feet, then to inches if needed.
- 2. Deck Boards:
- Number of boards = total deck width in inches ÷ (board width + gap) (then apply waste factor).
- Each board length = deck length in feet. Cost = (boards × cost/board).
- 3. Joists:
- Number of joists = deck width in inches ÷ joist spacing (rounded up), plus possibly one more if needed.
- Joist length = deck length. Cost = (joists × cost/joist).
- 4. Total cost = deck board cost + joist cost.
Embed this tool on your site using the iframe code above, or explore more construction tools at Apex Calculator.