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Curtain Panel Calculator
Calculate how many ready-made curtain panels and packages meet a rod-width and fullness target. Results update as you type and all assumptions stay visible.
READY-MADE PANEL COUNT
How many curtain panels?
Check whether the product width describes one panel or a pair. The result rounds up to a whole panel and may exceed the target fullness.
PANELS TO BUY
3 panels3 packages at 1 per package
METHOD
How the calculation works
The target flat width is working rod or track width multiplied by the selected fullness.
The calculator divides that target by one ready-made panel’s flat width and rounds up to the next whole panel. It then divides by the package quantity and rounds up again to a whole package.
Because the panel count is rounded up, the achieved fullness can exceed the requested ratio. Check whether the label width describes one panel or a pair.
Estimate, then verify
Measure the actual window and selected product. Manufacturer dimensions, heading systems, fabric behavior, and pattern matching can change the result. These tools do not determine hardware strength, fixings, or a guaranteed fit.
SOURCE NOTES
What this page is based on
Measurements here combine mathematical results with labeled commercial conventions and design recommendations. Disagreements are kept as ranges rather than averaged into a false standard.
- BETYDLIG/RÄCKA/HUGAD buying guide — Measure your windowIKEA · reviewed 2026-09-11
Primary manufacturer guide: add at least 6 in each side, add 6 in above, and use 2–2.5× rod width for panel planning.
- MATILDA curtain product specificationsIKEA · reviewed 2026-09-11
Manufacturer product guidance presents 1.5×, 2×, and 2.5× rod/track-width options for light through extra-full looks.
- Buying curtainsJohn Lewis & Partners · reviewed 2026-09-11
Retailer/workroom guidance on pole extension, hanging references, sill/floor endpoints, ready-made metric ranges, and double fullness.