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Brigitte Engel

Customer service › Size guide

Size guide

How to measure your ring size accurately, and our international conversion chart.

Ring size - how to measure

The most reliable method is to have your finger measured by a professional with a ring sizer: your usual jeweller can measure it for you, or lend you a sizer.

Otherwise, our printable ring sizer below works in two ways: lay a ring that already fits on the printed circles to read its size, or measure around your finger with a thin strip of paper.

View our ring sizer

Tips for an accurate measurement:

  • Measure at the end of the day, when fingers are slightly larger.
  • Avoid measuring in cold weather.
  • For a wide band (over 6 mm), consider going up half a size.
  • Between two sizes, choose the larger one.

Torn between two sizes? Up to two free resizings are included within 30 days of receipt, at the studio or with a partner jeweller chosen by the studio.

Ring size conversion chart

France / EU (mm)USA / CanadaUK / AustraliaDiameter (mm)
463¾G½14.6 mm
474¼H½15.0 mm
484½I½15.3 mm
495J15.6 mm
505¼K15.9 mm
515¾K½16.2 mm
526¼L½16.6 mm
536½M½16.9 mm
547N17.2 mm
557¼O17.5 mm
567½O½17.8 mm
578P½18.1 mm
588½Q½18.5 mm
598¾R18.8 mm
609¼S19.1 mm
619½T19.4 mm
6210T½19.7 mm
6310½U½20.1 mm
6410¾V½20.4 mm