Professional Needle Size Converter
Convert between US, UK, and Metric needle sizes with precision
How to Use
Drag the slider below to select your needle size in millimeters. The converter will automatically show you the equivalent US and UK sizes, and highlight the corresponding row in the conversion table.
Size Conversion Results
Metric Size
5.00 mm
US Size
8
UK Size
6
Complete Conversion Chart
| US Size | Metric (mm) | UK Size | Common Use |
|---|