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 boundary stiles inside both end margins. Door openings and unequal panels not modeled.
Example Calculation
- Wall width: 4000 mm
- End margin each side: 100 mm
- Stile width: 50 mm
- Equal panels: 5
Wall width = 4000 mm; End margin each side = 100 mm; Stile width = 50 mm; Equal panels = 5. Primary result: 700.
Frequently asked questions
How do I use this calculator?
Enter wall width, end margin each side, stile width, equal panels. The result updates automatically. Use Reset to restore the example values.
What method does it use?
clear panel width=(wall−2 margins−(panels+1)stile)/panels.. Full-width boundary stiles inside both end margins. Door openings and unequal panels not modeled.
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.