Eyelet Curtain Calculator — Eyelets & Fabric
Calculate eyelet spacing, heading fabric and ring quantities.
Width measurement
From top of eyelet ring to hem
Diameter measurement
Enter the eyelet spacing
Enter the heading above eyelet
Width measurement
Price per unit
How We Calculate This
Eyelet curtains use 2x fullness. The number of eyelets is calculated from the curtain width and spacing, always rounded to an even number.
The formula
Total width = Pole width × 2
Eyelets per curtain = round(Width per curtain ÷ Spacing) (rounded to even number)
Heading fold = (Above eyelet + Eyelet radius + 2cm) × 2
Cut drop = Curtain drop + Hem + Heading fold
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before cutting or purchasing fabric.