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    Ring Size Conversion: How to Measure at Home

    UnitConvertLab Team
    2026-04-22
    4 min read

    Measuring Your Finger

    The best way to measure is to use a piece of string or paper to find the circumference of your finger in millimeters.

    International Ring Sizes

    Inside Circumference (mm)US / CanadaUK / Australia
    49.35J 1/2
    51.96L 1/2
    54.47N 1/2
    57.08P 1/2

    Pro Tips for Accuracy

    • Measure in the evening (fingers are larger)
    • Measure 3-4 times to be sure
    • If between sizes, always go up

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