How to Measure Your Correct Ring Size

Our ring sizes use US sizing. For the most reliable fit, use a proper ring sizer or ask a local jeweler to measure your finger. Check the sizes available on your chosen product before ordering.

Measuring at home

The string method below gives an estimate. String can stretch or sit too tightly, so confirm your size with a ring sizer or jeweler, especially for a custom or personalized ring.

  1. Choose a Piece of String: Use a piece of non-stretch string to estimate your finger circumference.
  2. Wrap the String Around Your Finger: Gently wrap the string around the finger you wish to measure. Ensure it is neither too tight nor too loose.
  3. Mark the String: Mark the point where the ends of the string meet with a pen or marker.
  4. Measure the String: Lay the string flat and measure the length from the starting point to the mark with a ruler. Note the measurement in millimeters or inches.
  5. Determine Your Ring Size: Refer to the ring size chart below to convert the measurement to your corresponding ring size.

INTERNATIONAL RING SIZE CHART

Perimeter (Inches) Perimeter (mm) Diameter (mm) USA&CA UK/AU
1.74 44.2 14.1 3 F
1.765 44.8 14.3 3 1/4 F-1/2
1.79 45.5 14.5 3 1/2 G
1.815 46.1 14.7 3 3/4 G-1/2
1.84 46.8 14.9 4 H-1/2
1.865 47.4 15.1 4 1/4 I
1.89 48 15.3 4 1/2 I-1/2
1.915 48.7 15.5 4 3/4 J
1.941 49.3 15.7 5 J-1/2
1.966 49.9 15.9 5 1/4 K
1.991 50.6 16.1 5 1/2 K-1/2
2.016 51.2 16.3 5 3/4 L
2.041 51.8 16.5 6 L-1/2
2.066 52.5 16.7 6 1/4 M
2.091 53.1 16.9 6 1/2 M-1/2
2.116 53.8 17.1 6 3/4 N
2.141 54.4 17.3 7 O
2.167 55.1 17.5 7 1/4 O-1/2
2.192 55.7 17.7 7 1/2 P
2.217 56.3 17.9 7 3/4 P-1/2
2.242 57 18.1 8 Q
2.267 57.6 18.3 8 1/4 Q-1/2
2.292 58.3 18.5 8 1/2 R
2.317 58.9 18.8 8 3/4 R-1/2
2.342 59.5 19 9 S
2.368 60.2 19.2 9 1/4 S-1/2
2.393 60.8 19.4 9 1/2 T
2.418 61.4 19.6 9 3/4 T-1/2
2.443 62.1 19.8 10 U
2.468 62.7 20 10 1/4 U-1/2
2.493 63.4 20.2 10 1/2 V
2.518 64 20.4 10 3/4 V-1/2
2.543 64.6 20.6 11 W
2.569 65.3 20.8 11 1/4 W-1/2
2.594 65.9 21 11 1/2 X
2.619 66.6 21.2 11 3/4 X-1/2
2.644 67.2 21.4 12 Y
2.669 67.8 21.6 12 1/4 Y-1/2
2.694 68.5 21.8 12 1/2 Z
2.719 69.1 22 12 3/4 Z-1/2
2.744 69.7 22.2 13 Z1
2.769 70.4 22.4 13 1/4 Z1-1/2
2.795 71 22.6 13 1/2 Z2

Please note that this sizing chart is a general guide and may vary slightly depending on the design and style of the ring. For increased accuracy, consider purchasing a ring sizer or visiting a jewelry shop, where a professional can measure your ring size. If you have any further questions or need assistance, please don't hesitate to contact our customer support team.

We hope this information helps you find the perfect fit for your ring. Thank you for choosing YophieMade!

Check the size options for your design

This chart is a general reference. Available sizes vary by design; select a size listed on the product page. The Solid Gold Astronomical Birthstone Ring offers US sizes 4–14, including quarter sizes. If your size is not shown in the chart above, ask a jeweler to confirm your US size or contact us before ordering.

Planning engraving or custom gemstones? Confirm the fit first and read our engraving guide. For help with materials, styles, production times and returns, use our ring buying guide.