Curtain Panel Calculator
Work out the cut size for sewn curtain panels using your window width, fullness, panel count, and curtain style.
The calculator follows the sewing rules from the Omni reference for rod-pocket, grommet, pleated, and cuffed-top panels.
Result
--
Run the calculation to see the cut size.
| Metric | Value |
|---|---|
| Panel width | -- |
| Total finished width | -- |
| Cut length | -- |
| Total fabric area | -- |
Quick Answer
Start with your window width, multiply by fullness, split it across the number of panels, and add the style-specific length allowance for the top and hem.
How to Use It
- Choose inches or centimeters.
- Pick the curtain style.
- Enter the window width, desired length, fullness, and number of panels.
- Click Calculate.
Formula
Panel width = (window width x fullness + extra side seams) / number of panels
Cut length = desired length + style allowance
Worked Examples
Example 1: A 60-inch window, 2x fullness, and 2 panels gives 60 inches of total finished width.
Example 2: A rod-pocket curtain with an 84-inch drop and a 1-inch rod needs extra top allowance for the pocket.
Example 3: Four panels can share the width, with side seam allowance added to each extra panel.
How to Interpret Your Results
| Output | Meaning | Action |
|---|---|---|
| Panel width | The fabric width for one sewn panel before hemming. | Use it to cut each panel consistently. |
| Cut length | The raw fabric length needed for the selected style. | Cut before sewing hems or rod pockets. |
| More fullness | Fuller curtains use more fabric than a flat panel. | Increase fullness for a richer look. |
Frequently Asked Questions
Related Calculators
References
- OmniCalculator reference page
- Fabric allowances follow the style-dependent measurements described by Omni Calculator.
- Last reviewed: March 2026.