How to Convert Ring Sizes
Converting ring sizes between US, UK, and metric measurements ensures proper fit. Ring sizes are based on inner diameter.
UK sizes are typically 0.5 smaller than US sizes. For example, US 7 = UK N (approximately 6.5). The diameter in mm can be calculated from the US size for precise measurements.
For accurate sizing, it's best to measure your finger or visit a jeweler. Ring size can vary slightly between fingers and throughout the day.
Quick Tips
- 1 mile = 1.609 km (miles are bigger)
- 1 kg = 2.205 lbs (roughly double + 10%)
- Temperature: (°F - 32) × 5/9 = °C
Frequently Asked Questions
US size 7 equals approximately UK size N or N½ (6.5-7).
Use a ring sizer, measure an existing ring, or visit a jeweler.
Yes, due to temperature, weight changes, pregnancy, and time of day.
Evening, when fingers are slightly larger due to warmth and activity.