How far apart should hooks and eyes be?

For waistbands, one hook and eye is often sufficient. For back bodice closures, space them 2-3cm apart. Corset-style closures need 1.5-2cm spacing. Closer spacing gives a more secure closure.

What size hooks and eyes should I use?

Size 0-1 for lightweight fabrics and delicate closures. Size 2-3 for medium weight. Size 4+ for heavy fabrics and areas of strain. Use flat (trouser) hooks for waistbands and round hooks for bodice closures.

How do I sew on hooks and eyes?

Use matching thread and a small hand needle. Sew through each hole or loop with 4-5 stitches. Place the hook on the overlap side, slightly back from the edge. Place the eye on the underlap, extending slightly beyond the edge.

Can I use hooks and eyes on stretchy fabric?

Hooks and eyes work best on stable, non-stretch fabric. On stretchy fabric, they can pop open. For stretch closures, use snaps or hook-and-loop tape instead. Interface the closure area for added stability.

Hook and Eye Calculator — Free Notions & Supplies Tool

How We Calculate This

Hooks and eyes are stepped along the closure at the fixed spacing, starting at the top offset. The bottom offset sets the minimum clear gap left below the last hook, so it reduces the quantity that fits but does not change the spacing. The quantity is determined by the closure length, both offsets and the desired spacing.

The formula

Usable length = Closure length − Top offset − Bottom offset

Quantity = floor(Usable length ÷ Spacing) + 1

Positions are stepped from the top edge at the fixed spacing (Top offset, then +Spacing each set). Because hooks step from the top, the actual gap below the last hook may be larger than the bottom offset — that figure only sets the minimum clearance. Thread estimate ≈ Quantity × Stitches per hook × Thread per stitch × 2 (hook + eye), assuming ~2 cm per hand stitch over 4–6 stitches per hole (TREASURIE / MadamSew).

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify quantities before cutting or purchasing fabric.

Hook and Eye Calculator — Spacing & Quantity