ClarityHow to use this tool
- Enter length, maximum post spacing.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Length | Numeric value. Unit: m. Must be greater than zero. | 5 |
| Maximum post spacing | Numeric value. Unit: m. Must be greater than zero. | 2 |
Result for these sample inputs
4 posts
- Equal section length (m)
- 1.66666667
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Sections = ceil(length/maximum spacing). Posts = sections + 1.
Using length = 5 m, maximum post spacing = 2 m, the result is 4 posts. Change these example inputs to match your task; use the method above to check each step.
What to keep in mind
No gates, corners or shared end posts. Spacing is an input, not a structural recommendation. A material-quantity estimate, not a structural design or building-code check. Confirm site measurements, supplier coverage and waste before ordering.
Methodology maintained by ClarityKit. How these tools are built and checked.