Knitting Size Calculator
Enter your gauge in stitches and rows over 10 cm or 4 in, the width and length you want and your stitch pattern's repeat. The calculator gives the stitches to cast on, the rows to knit and the finished width.
- Stitches to cast on
- Rows
- Finished width
Measure gauge on a washed and blocked swatch, over 10 cm or 4 in.
Your gauge turns measurements into stitches. At 22 stitches per 10 cm, a 50 cm wide piece needs 110 stitches. At 30 rows per 10 cm, 60 cm long is 180 rows. If your pattern repeats every 4 stitches, round to a multiple of 4.
Cast on chart
Stocking stitch. Search for a gauge.
| Gauge (sts per 10 cm) | Yarn weight | Stitches for 50 cm |
|---|---|---|
| 14 | Chunky | 70 |
| 16 | Aran heavy | 80 |
| 18 | Aran | 90 |
| 20 | Worsted | 100 |
| 22 | DK | 110 |
| 24 | Light DK | 120 |
| 28 | 4-ply, sport | 140 |
| 32 | Fingering | 160 |
For 50 cm of width.
Width and stitches
22 stitches per 10 cm. Slide the width.
The fabric grows stitch by stitch.
How to work out stitches
Gauge to cast on. Step through it.
Swatch
Knit and block.
Measure gauge in the middle of the swatch, away from the edges.
Stocking stitch, rib or garter
Stitch patterns. Compare them.
Smooth.
Stretchy.
Bumpy.
Rib pulls in sideways, so knit a swatch in the stitch you will use.
Before you cast on
Knitting checks. Tick each item.
Tick each item as you go.
If your gauge is off, change needle size rather than the stitch count.
What you get
Knitting sizing. Each tile explains one result.
Stitches.
To knit.
Finished.
Rounded.
Check.
One stitch out per 10 cm makes a big jumper about 5 cm off in width.
Frequently Asked Questions
No question matches that search.
How do I work out how many stitches to cast on?
Multiply the width by your stitches per centimetre, then round to your stitch pattern.
How do I measure knitting gauge?
Count stitches and rows over ten centimetres on a blocked swatch.
What if my gauge is different from the pattern?
Change needle size until it matches, or recalculate the stitches.
How many stitches for a scarf?
At twenty-two stitches per ten centimetres, about forty-four for twenty centimetres wide.
How do I round for a stitch pattern?
Round to the nearest multiple of the repeat and add any edge stitches.
Why block a swatch?
Many yarns relax and grow after washing.
How many rows do I need?
Multiply the length by rows per centimetre.
Knit to size
Let your gauge do the maths and every piece comes off the needles at the size you planned.
More size calculators
Each one has its own calculator, worked examples and answers to common questions.