Decking Calculator
Estimate decking boards, total area, and project cost for wood, composite, and PVC decking projects with accurate measurements.
What is Decking?
Decking is a flat surface structure built outdoors using wood, composite, or PVC boards. It is commonly used for patios, gardens, terraces, swimming pool areas, and outdoor seating spaces.
How Decking is Calculated
Decking is calculated by multiplying the deck length and width to get total area, then dividing by board coverage and adding waste allowance.
Formula:
Deck Area = Length × Width
Adjusted Area = Deck Area + Waste%
Types of Decking Materials
- Wood Decking
- Composite Decking
- PVC Decking
- Bamboo Decking
Why Deck Planning is Important
- Prevents material shortage
- Reduces construction cost
- Improves installation accuracy
- Saves time and effort
Common Deck Uses
| Area | Use |
|---|---|
| Backyard | Outdoor sitting space |
| Pool Area | Non-slip surface |
| Garden | Relaxation area |
| Terrace | Roof outdoor space |
FAQ
How do I calculate decking?
Multiply length by width and adjust for waste and board size.
How much waste should I add?
Usually 5–15% depending on design complexity.
Which decking material is best?
Composite decking is most durable and low maintenance.

