Railway sleeper calculator
Estimate how many 100mm x 200mm x 2.4m railway sleepers you need for raised beds, borders and simple landscaping projects.
Enter your sleeper project details
Add the total linear meterage around your project, choose the finished height you want, then select whether the sleepers will be laid flat or on edge.
Your railway sleeper estimate
Use this as a starting point for planning your project. Always check your layout, corners, cuts and fixings before ordering.
| Item | Estimate | Notes |
|---|---|---|
| Sleeper size | 100mm x 200mm x 2.4m | This calculator is based on this sleeper size only. |
| Total linear meterage | 0m | Length around the full project. |
| Required finished height | 0mm | The height you want above ground. |
| Sleeper orientation | Laid flat | 100mm height per course. |
| Courses required | 0 | Rounded up from the finished height. |
| Sleepers per course | 0 | Based on 2.4m sleeper length. |
| Spare sleeper | No | Optional extra allowance. |
| Total sleepers required | 0 | Estimated quantity to order. |
Recommended next steps
Once you have your estimate, choose your railway sleepers and any timber or fixings needed for the job.
How this railway sleeper calculator works
This calculator is designed for our 100mm x 200mm x 2.4m railway sleepers. It uses your total linear meterage, required finished height and chosen sleeper orientation to estimate how many sleepers you need.
If the sleepers are laid flat, each course gives 100mm of height. If the sleepers are laid on edge, each course gives 200mm of height. The calculator rounds the number of courses up, then works out how many full 2.4m sleepers are needed per course.
How to measure linear meterage
Linear meterage is the total length around the project. For a raised bed, add every side together. For example, a bed measuring 2.4m long by 1.2m wide has a total linear meterage of 7.2m.
| Project size | Linear meterage calculation | Total linear meterage |
|---|---|---|
| 2.4m x 1.2m raised bed | 2.4 + 2.4 + 1.2 + 1.2 | 7.2m |
| 3.0m x 1.5m raised bed | 3.0 + 3.0 + 1.5 + 1.5 | 9.0m |
| 4.8m straight border | 4.8 | 4.8m |
Sleeper orientation guide
With 100mm x 200mm railway sleepers, the orientation changes the height gained from each course. Laid flat gives a lower 100mm course height. Laid on edge gives a taller 200mm course height.
| Orientation | Height per course | Best suited to |
|---|---|---|
| Laid flat | 100mm | Lower borders, edging and gradual raised bed heights. |
| Laid on edge | 200mm | Taller raised beds and projects needing fewer courses. |
Railway sleeper calculator FAQs
What size sleepers does this calculator use?
This calculator is based on 100mm x 200mm x 2.4m railway sleepers only.
How do I work out the linear meterage?
Add together the total length around the project. For a rectangular raised bed, add all four sides together.
What does laid flat mean?
Laid flat means the sleeper gives 100mm of height per course, based on a 100mm x 200mm sleeper.
What does laid on edge mean?
Laid on edge means the sleeper gives 200mm of height per course, based on a 100mm x 200mm sleeper.
Does this calculator allow for cuts and waste?
No. It estimates the number of full 2.4m sleepers needed. It does not allow for cuts, joints, overlaps, fixings or waste, so it is worth checking your layout before ordering.
Should I add a spare sleeper?
Adding one spare sleeper can be useful if your project involves cuts, corners or awkward joins. It also gives a little extra allowance if the layout changes on site.