Deck Area & Board Calculator
Calculate your deck area and the number of deck boards needed.
Enter deck dimensions and board size to get accurate material estimates.
Deck Estimate
Deck Area is calculated by multiplying length by width.
Area = Length × Width
Number of boards depends on the board width and the deck area:
Boards Needed = Deck Area / (Board Length × Board Width)
Unit conversions:
1 foot = 0.3048 meters1 square foot = 0.0929 square meters
Imperial tips:
- Standard deck board: 5.5 inches wide × 8, 10, 12, or 16 feet long
- Add 10–15% waste for cuts and imperfections
- Typical joist spacing: 16 inches on center
Metric tips:
- Common board width: 140 mm (14 cm)
- Standard lengths: 2.4 m, 3.0 m, 3.6 m, 4.8 m
- Add 10–15% waste for cuts and imperfections