- Take a length of floss or string and wrap it around the base of your finger.
- Mark where the floss or string first overlaps with a pen.
- Stretch the length of string out along a ruler or measuring tape, and take down the length in millimeters.
- The length you measured is the circumference of your finger—to calculate the diameter, divide the circumference by pi (dividing by 3.14 will work).
- Use the ring size chart below to compare the diameter of your finger to the standard ring sizes.
Jewelry Sizing Guide
Determining your ring size is more of an art than exact science. Some people prefer their rings loose while others like a snug fit. Let’s explore a few options to help you find your perfect fit.
How to Measure Your Ring Size with String
| INSIDE DIAMETER: | INSIDE CIRCUMFERENCE: | RING SIZES: | ||||
|---|---|---|---|---|---|---|
| MM | INCHES | MM (ISO) | INCHES | US/CANADA ETC. | ALPHABETICAL (AUSTRALIA, UK, NZ, ETC.) | European (ISO minus 40mm) |
| 11.6mm | 0.458" | 36.5mm | 1.438" | 0 | 40MM | |
| 11.8mm | 0.466" | 37.2mm | 1.463" | 1/4 | A | |
| 12.2mm | 0.482" | 38.4mm | 1.513" | 3/4 | A 1/2 | |
| 12.4mm | 0.489" | 39.1mm | 1.539" | 1 | B | |
| 12.6mm | 0.498" | 39.7mm | 1.564" | 1 1/4 | B 1/2 | |
| 12.9mm | 0.508" | 40.4mm | 1.591" | 1 1/2 | C 1/2 | 1 |
| 13.1mm | 0.514" | 41mm | 1.614" | 1 3/4 | C 1/2 | 1 |
| 13.3mm | 0.522" | 41.6mm | 1.639" | 2 | D | |
| 13.5mm | 0.532" | 42.3mm | 1.664" | 2 1/4 | D 1/2 | 2 |
| 13.7mm | 0.538" | 42.9mm | 1.689" | 2 1/2 | E | 3 |
| 13.9mm | 0.546" | 43.5mm | 1.714" | 2 3/4 | E 1/2 | |
| 14.1mm | 0.554" | 44.2mm | 1.741" | 3 | F | 4 |
| 14.3mm | 0.562" | 44.8mm | 1.765" | 3 1/4 | F 1/2 | |
| 14.5mm | 0.571" | 45.5mm | 1.791" | 3 1/2 | G | |
| 14.7mm | 0.578" | 46.1mm | 1.815" | 3 3/4 | G 1/2 | 6 |
| 14.9mm | 0.586" | 46.7mm | 1.840" | 4 | H | |
| 15.1mm | 0.594" | 47.4mm | 1.866" | 4 1/4 | H 1/2 | 7 |
| 15.3mm | 0.602" | 48mm | 1.891" | 4 1/2 | I | 8 |
| 15.5mm | 0.610" | 48.7mm | 1.918" | 4 3/4 | J | |
| 15.7mm | 0.618" | 49.3mm | 1.941" | 5 | J 1/2 | 9 |
| 15.9mm | 0.626" | 49.9mm | 1.966" | 5 1/4 | K | 10 |
| 16.1mm | 0.634" | 50.6mm | 1.991" | 5 1/2 | K 1/2 | |
| 16.3mm | 0.642" | 51.2mm | 2.016" | 5 3/4 | L | 11 |
| 16.5mm | 0.650" | 51.8mm | 2.041" | 6 | L 1/2 | |
| 16.7mm | 0.658" | 52.5mm | 2.066" | 6 1/4 | M | 12 |
| 16.9mm | 0.666" | 53.1mm | 2.091" | 6 1/2 | M 1/2 | 13 |
| 17.1mm | 0.674" | 53.8mm | 2.116" | 6 3/4 | N | |
| 17.3mm | 0.682" | 54.4mm | 2.141" | 7 | N 1/2 | 14 |
| 17.5mm | 0.689" | 55mm | 2.167" | 7 1/4 | O | 15 |
| 17.7mm | 0.698" | 55.7mm | 2.192" | 7 1/2 | O 1/2 | |
| 17.9mm | 0.706" | 56.3mm | 2.217" | 7 3/4 | P | 16 |
| 18.1mm | 0.714" | 56.9mm | 2.242" | 8 | P 1/2 | 17 |
| 18.3mm | 0.722" | 57.6mm | 2.267" | 8 1/4 | Q | |
| 18.5mm | 0.730" | 58.2mm | 2.292" | 8 1/2 | Q 1/2 | 18 |
| 18.7mm | 0.738" | 58.9mm | 2.317" | 8 3/4 | R | 19 |
| 18.9mm | 0.746" | 59.5mm | 2.342" | 9 | R 1/2 | |
| 19.2mm | 0.754" | 60.1mm | 2.368" | 9 1/4 | S | 20 |
| 19.4mm | 0.762" | 60.8mm | 2.393" | 9 1/2 | S 1/2 | 21 |
| 19.6mm | 0.770" | 61.4mm | 2.418" | 9 3/4 | T | |
| 19.8mm | 0.778" | 62.1mm | 2.443" | 10 | T 1/2 | 22 |
| 20mm | 0.786" | 62.7mm | 2.469" | 10 1/4 | U | |
| 20.2mm | 0.794" | 63.3mm | 2.494" | 10 1/2 | U 1/2 | 23 |
| 20.4mm | 0.802" | 64mm | 2.519" | 10 3/4 | V | |
| 20.6mm | 0.810" | 64.6mm | 2.544" | 11 | V 1/2 | 24 |
| 20.8mm | 0.818" | 65.2mm | 2.569" | 11 1/4 | W | 25 |
| 21mm | 0.826" | 65.9mm | 2.594" | 11 1/2 | W 1/2 | 26 |
| 21.2mm | 0.834" | 66.6mm | 2.619" | 11 3/4 | X | |
| 21.4mm | 0.842" | 67.2mm | 2.644" | 12 | X 1/2 | 27 |
| 21.6mm | 0.850" | 67.8mm | 2.669" | 12 1/4 | Y | 28 |
| 21.8mm | 0.858" | 68.4mm | 2.694" | 12 1/2 | Y 1/2 | |
| 22mm | 0.866" | 69.1mm | 2.719" | 12 3/4 | Z | 29 |
| 22.2mm | 0.874" | 69.7mm | 2.744" | 13 | Z 1/2 | |
| 22.4mm | 0.882" | 70.3mm | 2.769" | 13 1/4 | Z1 | 30 |
| 22.6mm | 0.890" | 71mm | 2.795" | 13 1/2 | 31 | |
| 22.8mm | 0.898" | 71.6mm | 2.820" | 13 3/4 | ||
| 23mm | 0.906" | 72.3mm | 2.847" | 14 | 32 | |
| 23.2mm | 0.914" | 72.9mm | 2.871" | 14 1/4 | 33 | |
| 23.4mm | 0.922" | 73.5mm | 2.896" | 14 1/2 | ||
| 23.6mm | 0.930" | 74.2mm | 2.921" | 14 3/4 | 34 | |
| 23.8mm | 0.938" | 74.8mm | 2.946" | 15 | 35 | |
| 24mm | 0.946" | 75.4mm | 2.971" | 15 1/4 | ||
| 24.2mm | 0.954" | 76.1mm | 2.996" | 15 1/2 | 36 | |
| 24.4mm | 0.962" | 76.7mm | 3.021" | 15 3/4 | 37 | |
Measure Your Wrist for Bracelet Size
STEP 1: Measure your wrist with a flexible tape measurements or a strip of paper just below the wrist bone, where you would normally wear the bracelet.
STEP 2: If you are using a plain strip of paper, mark your size with a pen or pencil then use a ruler to measure the length. That would be your wrist size.
STEP 3: To find your bracelet size, refer to the appropriate measurements in below bracelet chart.
| WRIST CIRCUMFERENCE: | BRACELET SIZES: | |||
|---|---|---|---|---|
| MM | INCHES | US/CANADA | EUROPE | UK/AUSTRALIA |
| 140mm | 5.5" | Small | XS | Small |
| 150mm | 5.9" | Small | S | Small |
| 160mm | 6.3" | Medium | M | Medium |
| 170mm | 6.7" | Medium | M | Medium |
| 180mm | 7.1" | Large | L | Large |
| 190mm | 7.5" | Large | L | Large |
| 200mm | 7.9" | Extra Large | XL | Extra Large |
| 210mm | 8.3" | Extra Large | XL | Extra Large |
Measure Your Wrist for Bangle
STEP 1: Close your fingers together and bring your thumb to your little finger (as pictured). Pretend that you were putting on a bangle
STEP 2: Using a strip of paper or tape measurements, wrap it around your hand at the widest point.. If you are using a plain strip of paper, mark your size with a pen on that paper. Then measure that paper strip with a ruler. That would be the circumference of your hand.
STEP 3: Compare your hand circumference to the chart below. Purchase a bangle with diameter that is the next size up from your actual hand measurement. Refer to the appropriate measurements in below bangle chart
| HAND CIRCUMFERENCE: | BANGLE SIZE: | ||
|---|---|---|---|
| MM | INCHES | DIAMETER (MM) | US SIZE |
| 160mm | 6.3" | 51mm | 2 |
| 165mm | 6.5" | 53mm | 2.5 |
| 170mm | 6.7" | 54mm | 3 |
| 175mm | 6.9" | 56mm | 3.5 |
| 180mm | 7.1" | 57mm | 4 |
| 185mm | 7.3" | 59mm | 4.5 |
| 190mm | 7.5" | 60mm | 5 |
| 195mm | 7.7" | 62mm | 5.5 |
Jewelry Sizing Guide FAQs
What is the most accurate way to measure my ring size at home?
The most accurate method is to use Riona Jewel's Print At-Home Sizing Guide. Ensure your printer settings are set to "actual size" (100% scale) for accuracy.