To help you find your ring size at home the easy way, our stainless steel ring experts have put together this complete guide to ring sizing, including ring size charts and tips for measuring at home, We’ve helped clients in over 100 countries find the right men’s steel rings and women’s steel rings.
Ring Size Guide
DIAMETER (mm) | CIRCUMFERENCE (mm) | USA / CANADA | FRANCE / GERMANY | SPAIN / ITALY | JAPAN | UNITED KINGDOM |
---|---|---|---|---|---|---|
14.05 | 44.14 | 3 | 44 | 4 | 4 | F |
15 | 46.49 | 4 | 47 | 6.5 | 7 | H |
15.3 | 47.5 | 4.5 | 48 | 7.5 | 8 | I 1/2 |
15.92 | 49.01 | 5 | 50 | 9 | 9 | J 1/2 |
16.24 | 50.52 | 5.5 | 51 | 10.5 | 10.5 | L |
16.56 | 52.02 | 6 | 52 | 12 | 12 | M |
16.88 | 53.03 | 6.5 | 53 | 13 | 13 | N |
17.2 | 54.03 | 7 | 54 | 14 | 14 | O |
17.83 | 55.04 | 7.5 | 56 | 15 | 15 | P |
18.15 | 56.04 | 8 | 57 | 16 | 16 | Q |
18.47 | 57.55 | 8.5 | 58 | 17.5 | 17 | Q 1/2 |
18.79 | 58.58 | 9 | 59 | 18.5 | 18 | R 1/2 |
19.27 | 60 | 9.5 | 60.5 | 20 | 19 | S 1/2 |
19.59 | 61.01 | 10 | 61.5 | 21 | 20 | T 1/2 |
20.06 | 62.52 | 10.5 | 63 | 22.5 | 22 | U 1/2 |
20.54 | 63.52 | 11 | 65 | 23.5 | 23 | V 1/2 |
21.02 | 65.03 | 11.5 | 66 | 25 | 24 | W 1/2 |
21.5 | 66 | 12 | 67 | 26 | 25 | Y |
21.82 | 67.51 | 12.5 | 68.5 | 27.5 | 26 | Z |
22.29 | 69.02 | 13 | 70 | 29 | 27 | Z+1 |
23.09 | 72 | 14 | 72.5 | 32 | 31 | Z+3 |
23.6 | 73.01 | 15 | 74 | 33 | N/A | Z+5 |
Some of our stainless steel rings feature a snug fit, which means the inner edge is rounded and won’t fall off, comfortable enough but loose enough for easy removal and manipulation. Due to this feature, these rings can sometimes feel a half size larger, please take this into account when customizing or wholesale, and ask the merchant.
According to the US Ring Size Standard, adult women’s rings are usually between 3 and 9, and adult men’s rings are usually between 8 and 14, please choose the closest size on the ring size chart to find your ring size.
Best Practices for Finding Your Size
Before measuring your ring size, keep these two things in mind:
1, Think about your knuckles: If your knuckles are larger than the base of your finger, measure at the widest point and at the base of your finger, and choose a size in between, otherwise you won’t be able to slide the ring into the correct position.
2, Try multiple times to ensure accuracy: The website at https://jimanjewelry.com/ recommends measuring your fingers three or four different times as your fingers change size throughout the day. Remember, if you’re hot, your fingers will get bigger, and if you’re cold, they’ll get smaller, Taking measurements when you’re a little warmer will ensure the ring will always fit.
Measurement methods
Here are two of the easiest ways to measure ring size at home, using a string and a ring sizer, so you can find and calculate the right ring.
Option 1: String or paper and ruler to measure ring size

Wrap the rope or paper tape around the base of your fingers, mark the points at the end with a pen, and measure the rope or paper tape with a ruler (mm). Remember, when measuring your finger with string or paper tape, do not loosen or tighten, as doing so will distort the size of the ring.
Option 2: Buy your own ring sizer

For the most accurate measurements, you can buy your own ring measuring tool, there are many options available on Amazon, eBay, Wish, Newegg, and Walmart, the best of which is a ring sizer shaped like a key ring, usually stainless steel or plastic material, the price is about ten dollars.
Measuring is easy, just slide your finger into the sizer to find the size that works for you. Also, you can use it when you buy a ring for your family.
Summarize
Finding your ring size is easy with the two simple methods above, and now you can be sure that your favorite ring will fit like a dress. When you need custom or wholesale, please choose https://jimanjewelry.com/, we are looking for importers of stainless steel jewelry rings, necklaces, pendants, earrings, and bracelets all over the world.
If you have any questions, please email me ( info@jimanjewelry.com ) and I’ll be happy to answer them.