Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Full-width end battens sit within the wall boundaries. Quantity estimate only. Confirm actual dimensions, openings, cutting patterns and supplier specifications. No structural design or code-compliance assessment.
Example Calculation
- Wall width: 4000 mm
- Batten face width: 50 mm
- Equal spaces: 8
4000 mm width with nine 50 mm battens and eight spaces gives 443.75 mm clear spacing.
Frequently asked questions
How do I use this calculator?
Enter wall width, batten face width, equal spaces. The result updates automatically. Use Reset to restore the example values.
What method does it use?
n battens=spaces+1; clear space=(wall width−n × batten width)/spaces.. Full-width end battens sit within the wall boundaries. Quantity estimate only. Confirm actual dimensions, openings, cutting patterns and supplier specifications. No structural design or code-compliance assessment.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.