How many extra stitches do pleats need?

A knife pleat needs 3x the folded pleat width in stitches (face plus two hidden layers). A box pleat — and the identical inverted box pleat — is two knife pleats back-to-back, so it needs 6x. A shallow accordion pleat needs about 2x (a full-depth accordion needs about 3x). For example, a 2cm knife pleat that spans 5 stitches needs 15 stitches total (10 extra); the same width as a box pleat would need 30 stitches.

What types of pleats can I knit?

Knife pleats fold in one direction. Box pleats fold symmetrically outward from centre. Inverted box pleats fold inward. Accordion pleats alternate direction. Each creates a different look and uses different amounts of extra fabric.

How do I form pleats in knitting?

Knit the full width including pleat fabric. On the fold row, fold the pleat and knit through all layers to join. Use stitch markers to mark fold lines. Some knitters prefer to fold and pin before joining.

Do pleats use more yarn?

Yes, significantly. A knife pleat uses about 3x the yarn for the pleated section because it creates 3 layers of fabric. A box pleat or inverted box pleat is two knife pleats, so it uses about 6x. A shallow accordion uses about 2x. Plan yarn quantities accordingly.

Where are pleats used in knitting?

Pleats appear in skirts, kilts, cuffs, and decorative panels. A pleated skirt might have knife pleats all around. A kilt features box pleats at the back. Cuffs may use small accordion pleats for a gathered look.

KnitCalcs

Pleat Calculator — Extra Stitches for Knitted Pleats

Calculate the additional stitches needed for knitted pleats of various types.

Finished Width

Width after pleats are folded

Pleat Width

Width of each pleat when folded

Stitch Gauge (per 10cm)

Stitches per 10cm from your gauge swatch

Pleat TypeKnife = 3x folded width; box & inverted box = 6x (two knife pleats); shallow accordion = 2x (full accordion ~3x)

How We Calculate This

This calculator determines how many extra stitches you need to create pleats, based on the pleat type and finished width.

Pleat multipliers

Knife pleat: 3x pleat width (face + 2 hidden layers)
Box pleat: 6x pleat width (two knife pleats back-to-back)
Inverted box pleat: 6x pleat width (a reversed box pleat)
Accordion pleat: 2x pleat width for a shallow fold (a full-depth accordion needs ~3x)

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates based on standard yarn weights and gauge. Results may vary with individual tension, yarn brand, and needle size.