Belt Size Converter
Convert the waist measurement used by a belt chart between centimetres and inches. Confirm whether the brand labels body waist, trouser waist, centre hole or total strap length.
Open Belt Size ConverterChoose the converter that matches the measurement named by the product chart. These tools convert physical units; they do not claim one universal accessory label across every brand.
Hat Size Converter
Convert head circumference between centimetres and inches, measured level around the position where the hat will sit. Use the brand chart for S, M or L.
Open Hat Size ConverterGlove Size Converter
Convert hand circumference between centimetres and inches after measuring around the widest knuckles without the thumb. Sport, work and fashion glove charts can differ.
Open Glove Size ConverterHelmet Size Guide
Convert head circumference units for an exact helmet model chart. A secure try-on and the manufacturer’s fitting instructions remain mandatory.
Open Helmet Size Guide| Supported measurements | Waist, head circumference and hand circumference in centimetres or inches. |
|---|---|
| Source Basis | Direct SI-to-imperial unit conversion; helmet guidance also references the reviewed CPSC fit basis. |
| Confidence Level | High for exact unit conversion. Brand labels and final fit remain dependent on the exact product chart. |
| Related guidance | How to Measure for Accessories · Ring Size Converter |