Knitting Gauge Calculator
Adjust your stitch and row counts when your knitting gauge does not match the pattern. Enter your gauge and get the corrected cast-on count.
Your Gauge (per 10cm)
Pattern Gauge (per 10cm)
Desired Dimensions
Cast On (Stitches)
121
+11 stitches from pattern
Rows to Work
193
+13 rows from pattern
Gauge Difference
Your gauge is -9.1% different from the pattern.
Gauge matters! Even small differences accumulate over large projects. Always knit a swatch and adjust your needle size to match the pattern gauge.
How to use this calculator
- Check your gauge: Knit a swatch in your yarn and measure stitches and rows per 10cm
- Enter your gauge: Input the stitch and row counts from your swatch
- Enter pattern gauge: Check your pattern for the recommended gauge
- Get adjusted numbers: Cast on the adjusted stitch count instead
Why Gauge Matters More Than the Pattern Says
Gauge is the number of stitches and rows your knitting produces over a 10cm square in the yarn and needles you are using. DK weight on 4mm needles typically gives 22 stitches and 30 rows per 10cm; aran on 5mm needles is closer to 18 stitches and 24 rows. Patterns assume you knit at a specific gauge, and even a single stitch difference per 10cm compounds over a project. A jumper knitted at 20 stitches per 10cm instead of the pattern's 22 will end up around 10% wider, which on a 100cm chest jumper is 10cm extra room - the difference between fitted and falling off your shoulders.
The calculator takes your swatch gauge plus the pattern gauge and rescales the cast-on count automatically. Cast on 110 stitches at the pattern gauge of 22 sts/10cm gives a 50cm-wide piece; if your gauge is only 20 sts/10cm, the calculator tells you to cast on 100 stitches instead to land at the same 50cm. Same logic for rows: if you knit looser than the pattern, you need fewer rows to reach the right length, and the row counter saves you from mid-project frogging.
Swatching Properly Saves You Days of Knitting
Cast on at least 30 stitches and knit a 15cm square before you measure, because the edge stitches always lie differently from the middle. Wash and block the swatch the way you intend to wash the finished piece - a cotton or wool blend can grow 5% in length after the first wash, which turns a perfectly-sized cardigan into something that hangs to your knees. Measure across the middle 10cm in two places and average them, ignoring the cast-on row and the live stitches at the top.
Dye lot is the silent killer of long projects. A jumper using 8 balls of yarn from the same dye lot will look uniform; mixing two dye lots midway through (say, two balls from lot A4521 and two from lot A4528) creates a visible band where the colour changes. Buy enough yarn for the full project plus one extra ball at the start, even if it costs more, because reordering later almost always means a different lot. The [yarn cost calculator](/yarn-cost-calculator) helps work out how many balls you actually need before you commit at the till.
Frequently Asked Questions
What is the standard knitting gauge for DK yarn?
DK weight wool on 4mm needles typically produces 22 stitches and 30 rows per 10cm in stocking stitch. Cotton DK runs slightly tighter, around 23 stitches per 10cm. Acrylic DK can vary more depending on brand. Always check the ball band for the manufacturer's recommended gauge and use that as your starting point, then adjust needle size up or down if your swatch is off.
How do I adjust a pattern if my gauge is different?
Multiply the pattern's stitch count by the ratio of pattern gauge to your gauge. If the pattern is 22 sts/10cm with a 110-stitch cast-on and you knit at 20 sts/10cm, the maths is 110 × (20/22) = 100 stitches. Same for rows. The calculator does this automatically and rounds to the nearest stitch, but it is worth understanding so you can sanity-check the result before casting on.
Should I go up or down a needle size if my gauge is too tight?
Tight gauge (more stitches per 10cm than the pattern) means your fabric is denser than intended. Go up half a needle size (3.75mm to 4mm, or 4mm to 4.5mm) and re-swatch. Half-size adjustments are the standard fix because a full size jump usually overshoots. If the pattern calls for 4mm needles and you knit at 24 sts/10cm instead of 22, try 4.5mm needles and expect to land around 21-22 sts/10cm.
Why does washing change my gauge?
Wool and natural fibre yarns relax when wet, which can change both the stitch count per 10cm and the overall dimensions of the fabric. Cotton tends to grow lengthwise; wool plumps up and tightens slightly. Always swatch, wash and block the swatch the way you will treat the finished garment, then measure again. Pre-washed yarn is more stable but most knitters work with yarn straight from the ball, so factoring in the wash is essential.
Related Tools
Yarn Cost Calculator
Estimate how much yarn you need and what it will cost for any knitting or crochet project. Covers scarves, jumpers, blankets, socks and more by size and yarn weight.
Yarn Weight Converter
Convert between UK, US and Australian yarn weight names with recommended needle sizes, hook sizes, wraps per inch and typical gauge for each weight.
Stitch Counter
A simple tap counter for knitting and crochet. Track rows and stitches with large touch-friendly buttons. Saves your count automatically.