How Much Decking Do I Need?
Decks & Fences Guide Estimating decking starts with the total surface area of the deck. From there, board width, board spacing, deck layout and waste determine how many boards you should plan to purchase. Quick answer: calculate deck area, determine the effective coverage of each board, add an appropriate waste allowance and round up to whole boards. Calculate your deck materials automatically Enter your deck dimensions, board size and waste allowance to estimate decking quantity and other basic project materials. Use the Deck Calculator Square Footage Calculator How to Calculate Deck Area For a rectangular deck, multiply the length by the width. Deck Area = Length × Width For example, a deck measuring 12 ft by 16 ft has an area of: 12 × 16 = 192 ft² That 192 ft² figure is th...