US
10
=
Japan
20
(62.1mm)
Also: UK TEU 62
Nearby Sizes
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Full Size Chart
| US | UK | EU | JP | Inner circumference |
|---|---|---|---|---|
| 3 | F | 44 | 4 | 44.2mm |
| 3.5 | G | 45.5 | 5 | 45.5mm |
| 4 | H | 47 | 7 | 46.8mm |
| 4.5 | I | 48 | 8 | 48mm |
| 5 | J | 49 | 9 | 49.3mm |
| 5.5 | K | 50.5 | 10 | 50.6mm |
| 6 | L | 51.5 | 12 | 51.9mm |
| 6.5 | M | 53 | 13 | 53.1mm |
| 7 | N | 54 | 14 | 54.4mm |
| 7.5 | O | 55.5 | 15 | 55.7mm |
| 8 | P | 57 | 16 | 57mm |
| 8.5 | Q | 58 | 17 | 58.3mm |
| 9 | R | 59 | 18 | 59.5mm |
| 9.5 | S | 60.5 | 19 | 60.8mm |
| 10 | T | 62 | 20 | 62.1mm |
| 10.5 | U | 63 | 22 | 63.4mm |
| 11 | V | 64 | 23 | 64.6mm |
| 11.5 | W | 65.5 | 24 | 65.9mm |
| 12 | X | 67 | 25 | 67.2mm |
| 13 | Z | 69.5 | 27 | 69.7mm |
Convert US 10 to Other Systems
A ring size 10 in US is equivalent to a JP size 20. Your measurement of approximately 62.1mm corresponds to this size. This conversion follows internationally recognized sizing standards used across the industry. While most brands adhere closely to these standards, slight variations can occur, so we suggest confirming with the retailer's specific size chart before purchasing.
Frequently Asked Questions
What is US 10 in JP ring?
US size 10 in ring is equivalent to JP size 20. This conversion is based on standard international sizing charts and is widely accepted across brands and retailers.
What is US 10 in other sizing systems?
US size 10 in ring converts to: UK T, EU 62, JP 20. Use our converter above to see all available systems.
Is US 10 the same as JP 20?
Yes, US 10 is equivalent to JP 20 in standard ring sizing. However, fit can vary between brands, so trying on items or checking brand-specific size charts is always recommended.
How accurate are ring size conversions?
Our size conversions are based on international standards and verified against multiple authoritative sources. They represent the most widely accepted equivalents. However, individual brands may size slightly differently, so we recommend trying items on when possible or checking the brand's own size guide.
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Need help? Read our How to Measure Ring Size guide.