Count hooks fast for smooth, tidy curtain folds. Choose pleats, fullness, and spacing in seconds. Avoid sagging edges with proper returns and extras always.
The suggested range varies spacing by ±10% to show a practical band for hardware selection.
Tip: For heavy shade cloth, reduce spacing and add a few spares.
| Track width | Panels | Spacing | Fullness | Style | Returns (L/R) | Edge hooks | Allowance | Estimated total hooks |
|---|---|---|---|---|---|---|---|---|
| 180 cm | 2 | 10 cm | 2.0 | Gathered | 5 / 5 cm | 2 per panel | 4 | ~44 |
| 240 cm | 2 | 9 cm | 2.3 | Pinch pleat | 7 / 7 cm | 2 per panel | 6 | ~78 |
| 120 in | 1 | 4 in | 1.8 | Ripplefold | 2 / 2 in | 3 per panel | 5 | ~40 |
Example totals are approximate; your chosen spacing and hardware type may vary.
This calculator estimates hook points across each curtain panel span so gathers stay even. It begins with usable track width after returns, then divides by panel count. Base points follow floor(panel_width ÷ spacing) + 1, which includes both ends. Even spacing helps garden-room curtains resist drafts and reduces light leaks along greenhouse doors. Mark hook positions before sewing to prevent drift.
Fullness changes how much fabric stacks into pleats. A 2.0 ratio is a common baseline, while 1.5 suits lighter liners and 2.5 suits thicker shade cloth. The tool applies a controlled adjustment factor so higher fullness nudges hook points upward without doubling hardware. For heavy blackout fabrics, tighter spacing often performs better than extreme fullness. Test a short sample run to confirm glide and spacing.
Heading style influences hardware. Gathered tape typically uses one hook per point. Pinch pleat headings often use twin hooks, so the calculator multiplies points by two to reflect that setup. Ripplefold systems usually use one hook per carrier, but the spacing you enter should match your carrier pitch. Select the style that matches your tape and track.
Returns wrap fabric back toward the wall or frame, improving coverage and reducing side gaps. Because returns consume track length, the calculator subtracts them before distributing hooks. Edge hooks add stability at leading edges, especially on outdoor garden screens that catch wind. Allowance hooks provide spares for breakage, adjustments, or adding tie-back positions later.
Use the suggested total range as a purchasing buffer, based on a small spacing variation. If your track has frequent gliders or bends, choose the upper end of the range. The CSV download supports stock lists and supplier orders, while the PDF creates a simple job sheet for installers. Keep recorded inputs with each site measurement to replicate results reliably.
Yes. Use your track span, include returns for side coverage, and select spacing that matches your carriers or tape pockets. For windy locations, add edge hooks and a small allowance pack.
Many tape headings work well at 8–12 cm or 3–5 inches. Heavier fabrics usually need closer spacing. If the curtain feels wavy at the top, reduce spacing slightly and recalculate.
Returns are the wrap-around lengths at each end. They occupy track space but do not contribute to the clear opening. Subtracting them prevents undercounting hooks across the panel span.
Fullness adjusts hook points modestly around a 2.0 reference. Higher fullness typically needs more points to keep folds even. The adjustment is clamped to avoid unrealistic jumps in hardware.
Choose pinch pleat when you use pleat tape or sewn pleats that require twin hooks. The calculator applies a multiplier so you buy enough hooks for each pleat point.
It shows a practical band if your real spacing ends up about 10% tighter or looser. Use the upper end when tracks have bends, outdoor movement, or when you want extra hooks for tuning.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.