How do I grade a pattern for multiple sizes?

Start with a base size that fits correctly and has the right stitch count. Decide the measurement increment between sizes (commonly 5cm for adults). Multiply the increment by your gauge to find how many stitches to add or subtract per size. This calculator does it automatically.

What size increment should I use?

For adult garments, 5cm (approximately 2 inches) between sizes is standard. Children's patterns often use 2-3cm increments. Plus sizes may use 5-10cm increments. The increment should match your target size range divided by the number of sizes.

Do I need to adjust shaping for each size?

Yes. When you change the body stitch count, you also need to adjust armhole depth, sleeve width, neckline width, and body length. Use the other pattern maths calculators to recalculate each measurement for each size.

How many sizes should a pattern include?

Most published patterns include 5-8 sizes. For comprehensive sizing, 8-10 sizes covering a wide range is ideal. At minimum, include small, medium, and large. More sizes make the pattern accessible to more knitters.

What if my stitch count does not work with the pattern repeat?

After grading, round each size's stitch count to the nearest multiple of your pattern repeat. This may mean sizes are not perfectly evenly spaced, but each size will have a complete pattern. Note any adjustments in the pattern instructions.

KnitCalcs

Multiple Sizing Calculator — Stitch Counts for Multiple Sizes

Calculate stitch counts for multiple sizes from a single base size, evenly graded by measurement increment.

Base Size Measurement

Chest/width of your base size

Base Stitch Count

Stitches for the base size

Stitch Gauge (per 10cm)

Stitches per 10cm from your gauge swatch

Size Increment

Measurement difference between sizes

Number of Sizes

Total sizes to generate

How We Calculate This

This calculator generates stitch counts for multiple sizes by applying your gauge to even measurement increments from a base size.

How it works

Stitch increment: Size increment (cm) x gauge (sts/cm)
Each size: Base stitches +/- (offset x stitch increment)
Sizes are distributed evenly around the base size

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.