Estimate posts along a bearer
This is a layout helper only. It does not size footings, posts or bearers.
SpanFinder.com.au
Deck Bearer & Post Spacing Calculator
Estimate post or pier spacing along a bearer line and understand how support spacing relates to bearer span-table selection.
PostsTargets deck post spacing, bearer spacing, pier spacing and bearer span calculator searches.
Estimated supports
5 posts
Approximate spacing: 1500 mm.
The chosen spacing becomes a bearer span input, but the bearer must still be checked in the relevant span table.
Related calculators and guides
Deck bearer and post spacing FAQs
What is deck post spacing?
Deck post spacing is the distance between posts or piers supporting a bearer. It often becomes the bearer span checked in the span table.
Is post spacing the same as bearer span?
Usually, if posts directly support the bearer, the distance between posts is the bearer span. Complex layouts may need engineering review.
How do I estimate number of posts?
For a simple straight bearer line, divide the bearer length by your chosen maximum spacing and add one end post.
Does closer post spacing help?
Closer posts reduce bearer span, which may allow a smaller bearer, but footing design and practical layout still matter.
Can this choose the bearer size?
No. It estimates post count and spacing only. Use the live span finder or source bearer tables for member selection.