Needle Gauge Checker
Identify any knitting needle by its mm diameter, and find suggested needle sizes from your swatch gauge.
Identify My Needle
Measure your needle diameter with a needle gauge card and enter it below.
Gauge-Check: Find Suggested Needle Size
Enter your measured stitch gauge to find what needle size is typical.
Full Needle Size Conversion Table
| mm | US Size | UK / Canadian | Yarn Weight |
|---|
Note: Needle sizing varies slightly by manufacturer. Measure your needle with a gauge card for precision.
How to Use
- Identify My Needle: Use a needle gauge card (the metal or plastic card with holes) to measure your needle diameter in mm, then enter it above.
- Gauge-Check: Count stitches over 4 inches in your swatch, enter that number, and find the typical needle size for that gauge.
- Conversion Table: Browse the full mm ↔ US ↔ UK reference below.
How to Measure Your Needle
- Insert the needle into the round holes on your needle gauge card.
- Find the smallest hole the needle fits through without forcing — that is your needle size.
- Read the mm measurement printed beside that hole.