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How to measure ring size with a string?

Published in Ring Sizing 3 mins read

Measuring your ring size using a string is a simple method you can do at home. Here's a step-by-step guide, incorporating information from the provided reference:

Steps to Measure Ring Size with a String

Here's how to accurately measure your ring size using a string or a strip of paper:

  1. Gather Materials: You will need a thin string (or a strip of paper), a pen or marker, and a ruler (preferably with millimeter markings).

  2. Wrap Around Your Finger:

    • Take the string or paper and wrap it around the base of the finger where you plan to wear the ring. Make sure it's snug but not too tight.
    • Ensure that the string is sitting comfortably around the widest part of your finger.

  3. Mark the Meeting Point:

    • Use your pen or marker to make a mark on the string (or paper) where the two ends meet. This point represents the circumference of your finger.

  4. Measure the Length:

    • Carefully lay the string or paper on a flat surface and use the ruler to measure the distance from the end of the string to the mark you made. Record this measurement in millimeters (mm). This is the circumference of your finger.

  5. Calculate the Diameter

    • The reference states that to get the diameter of the ring, you must divide the measured circumference by 3.14.
    • Formula: Diameter = Circumference / 3.14 (or Pi)
    • For example, if your measured circumference was 55mm: 55 mm / 3.14 = approximately 17.5mm.

Example:

Let's walk through an example:

  • Step 1: You wrap the string around your finger.
  • Step 2: You mark the meeting point.
  • Step 3: You measure the string with a ruler and find it's 60mm long.
  • Step 4: You divide 60mm by 3.14 = approximately 19.1 mm.
  • Result: Your approximate ring diameter is 19.1mm. You would use this diameter measurement to find your ring size with an online ring chart or your jeweler.

Important Considerations

  • Time of Day: Your finger size can fluctuate throughout the day. Measure your finger at the end of the day when it is likely to be at its largest.
  • Temperature: Avoid measuring your finger when it's very cold, as fingers tend to shrink.
  • Accuracy: For the most accurate results, repeat the measurement two or three times.
  • Wide Band Rings: Keep in mind that for wider band rings you might want to size up a half size.
  • Professional Sizing: Using a string or paper to measure is a good at home estimation. However, if you are unsure or need a more precise measurement, it's always recommended to go to a jeweler and get sized professionally.

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