Decking and fencing
Calculators
Decking calculator
Example: Order: 26 boards and 8 joists
Fence calculator
Example: Order: 6 panels and 7 posts
Postcrete calculator
Example: Order: 27 bags of post-fix (3 per post if you mix whole bags per hole: 30)
- Carpentry
Spindle spacing calculator
Example: You need 14 spindles with 95.1 mm gaps
Deck substructure calculator
Example: You need 11 joists, 3 bearer lines and 9 posts
- Decorating
Fence and decking stain calculator
Example: Order: 1 × 10 L + 1 × 5 L + 2 × 1 L (16.74 L)
- Landscaping
Sleeper calculator
Example: Order: 6 sleepers
Start here
Start with how many decking boards do i need.
Start here: guides
How many decking boards do I need?
Work out rows of boards, board lengths, joists and screws for a deck, and why joist spacing comes from the board maker.
How many fence panels and posts do I need?
The sum for fence panels and posts on a straight run, sharing posts at corners, gravel boards and concrete per post.
Decking and fence rules in the UK
Fence heights, raised decks and boundaries: where to find the official rules for England, Wales, Scotland and Northern Ireland.