Men’s ring sizes
Men’s rings often map to larger rows in the same chart. Use measured diameter or circumference to choose the final size.
Ring Size Chart
Compare US, UK, EU, and JP ring sizes using inside diameter and circumference in mm, cm, and inches. Use this page as your main ring size reference, then confirm with measurement and conversion tools.
Need help finding your size?
- Have a measurement? Use the ring size calculator.
- Buying internationally? Use the ring size converter.
- Not sure how to measure? Read how to measure ring size.
Ring Size Chart Table
Use this full chart to compare US, UK, EU, and JP sizes with diameter and circumference values.
| US | UK | EU | JP | Diameter (mm) | Circumference (mm) | Diameter (in) | Circumference (in) | Circumference (cm) |
|---|---|---|---|---|---|---|---|---|
| 3.0 | F | 44 | 4 | 14.05 | 44.14 | 0.553 | 1.738 | 4.41 |
| 3.5 | G | 45 | 5 | 14.45 | 45.40 | 0.569 | 1.787 | 4.54 |
| 4.0 | H 1/2 | 47 | 7 | 14.86 | 46.68 | 0.585 | 1.838 | 4.67 |
| 4.5 | I 1/2 | 48 | 8 | 15.27 | 47.97 | 0.601 | 1.889 | 4.80 |
| 5.0 | J 1/2 | 49 | 9 | 15.70 | 49.32 | 0.618 | 1.942 | 4.93 |
| 5.5 | K 1/2 | 50 | 10 | 16.10 | 50.58 | 0.634 | 1.991 | 5.06 |
| 6.0 | L 1/2 | 52 | 12 | 16.51 | 51.87 | 0.650 | 2.042 | 5.19 |
| 6.5 | M 1/2 | 53 | 13 | 16.92 | 53.16 | 0.666 | 2.093 | 5.32 |
| 7.0 | N 1/2 | 54 | 14 | 17.35 | 54.51 | 0.683 | 2.146 | 5.45 |
| 7.5 | O 1/2 | 56 | 16 | 17.75 | 55.76 | 0.699 | 2.195 | 5.58 |
| 8.0 | P 1/2 | 57 | 17 | 18.19 | 57.15 | 0.716 | 2.250 | 5.71 |
| 8.5 | Q 1/2 | 58 | 18 | 18.53 | 58.21 | 0.730 | 2.292 | 5.82 |
| 9.0 | R 1/2 | 59 | 19 | 18.89 | 59.34 | 0.744 | 2.336 | 5.93 |
| 9.5 | S 1/2 | 61 | 21 | 19.41 | 60.98 | 0.764 | 2.401 | 6.10 |
| 10.0 | T 1/2 | 62 | 22 | 19.84 | 62.33 | 0.781 | 2.454 | 6.23 |
| 10.5 | U 1/2 | 63 | 23 | 20.20 | 63.46 | 0.795 | 2.498 | 6.35 |
| 11.0 | V 1/2 | 64 | 24 | 20.68 | 64.97 | 0.814 | 2.558 | 6.50 |
| 11.5 | W 1/2 | 66 | 26 | 21.08 | 66.23 | 0.830 | 2.607 | 6.62 |
| 12.0 | Y | 67 | 27 | 21.49 | 67.51 | 0.846 | 2.658 | 6.75 |
| 12.5 | Z | 68 | 28 | 21.89 | 68.77 | 0.862 | 2.707 | 6.88 |
| 13.0 | Z+1 | 69 | 29 | 22.33 | 70.15 | 0.879 | 2.762 | 7.02 |
Measurements are approximate and may vary by jeweler, ring width, and measurement method. Example: 16.51 mm diameter = 1.65 cm = 0.650 in.
Measurements are approximate. Sizes can vary slightly by jeweler, region, ring width, and measurement method. If you are between two sizes, check the measurement guide or use the ring size calculator before ordering.
Ring Size Chart in MM
Ring size can be estimated from inside diameter in millimeters or inside circumference in millimeters. The main chart includes full values; this quick view highlights common sizes. For deeper millimeter lookup by both diameter and circumference, open Ring Size Chart in MM. You can also use the ring size calculator for direct matching.
| US | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 5.0 | 15.70 | 49.32 |
| 5.5 | 16.10 | 50.58 |
| 6.0 | 16.51 | 51.87 |
| 6.5 | 16.92 | 53.16 |
| 7.0 | 17.35 | 54.51 |
| 7.5 | 17.75 | 55.76 |
| 8.0 | 18.19 | 57.15 |
Visual Ring Size Chart
Use this visual ring size chart to compare US, UK, EU, JP, diameter, and circumference measurements. For the most accurate lookup, use the full chart above or the ring size calculator.
Ring Size Chart in Inches and CM
You can measure either the inside diameter of an existing ring or the circumference around your finger, then compare using inch or centimeter values in the table. If your measurement feels inconsistent, follow how to measure ring size and confirm with the ring size calculator.
International Ring Size Conversion Chart
Different countries use different ring sizing systems. US sizes usually use numbers, UK sizes use letters, and EU and JP use their own numeric scales. This chart gives a practical side-by-side comparison, while the ring size converter is better for quick one-off conversions.
Men’s and Women’s Ring Sizes
Ring sizing systems are the same for men and women. Men’s rings are often larger on average and women’s rings are often smaller on average, but individual fit varies and should be based on actual measurement. For detailed men-focused ranges, tips, and lookup tables, use Men’s Ring Size Chart.
Women’s ring sizes
Women’s rings often map to smaller rows in the same chart. Use measured diameter or circumference to choose the final size.
Printable Ring Size Chart
A printable chart helps you check an existing ring or measure with a paper strip. Print at 100% scale and verify calibration with a ruler or check bar before using results. Open the printable ring sizer for a full printable sheet.
Ring Size Chart FAQ
What is the easiest way to find my ring size?
Measure your finger or an existing ring in millimeters, then match the closest row in the chart. If you are unsure, use the ring size calculator and measurement guide for a second check. Start with the ring size calculator and verify using the printable ring sizer when possible.
How do I convert mm to ring size?
Use inside diameter mm or circumference mm from your measurement and match it to the nearest chart row. You can also use the ring size converter for one-off conversions between systems.
Is ring size based on diameter or circumference?
Either can be used. Diameter is measured across the inside of a ring, while circumference is the distance around your finger or ring interior.
Are US and UK ring sizes the same?
No. US sizes are numeric and UK sizes are letter-based. Use the international comparison columns or the ring size converter to map between them.
Can I use a printable ring size chart accurately?
Yes, if you print at 100% scale and confirm calibration first. Use the printable ring sizer page and verify with a ruler or the scale check area before measuring.
What is the difference between men’s and women’s ring sizes?
The sizing system is the same, but men often wear larger sizes on average and women often wear smaller sizes on average. Final sizing should always come from actual measurement.
What should I do if I am between two ring sizes?
Check your measurement again, then compare comfort and ring width. If you are still between sizes, many people choose the larger size for comfort.
How accurate is an online ring size chart?
A chart is a strong reference, but minor differences can happen by jeweler, region, ring width, and measurement method. Use chart + calculator + printable checks for best results.