Ring Size Guide — How to Measure Your Ring Size at Home
Finding the right ring size is one of the most important steps when buying a ring — especially for an engagement ring or wedding band. This guide walks you through everything you need to know to measure your ring size accurately at home, with no special tools required.
Method 1: Measure Your Finger with Paper or String
This is the most reliable at-home method and takes less than two minutes.
- Cut a thin strip of paper or use a piece of string approximately 10cm long.
- Wrap it snugly around the base of the finger you plan to wear the ring on.
- Mark the point where the paper or string overlaps with a pen.
- Lay it flat and measure the length in millimeters.
- Use the ring size chart below to find your US size.
Method 2: Measure an Existing Ring
If you already own a ring that fits well, you can use it to find your size.
- Place the ring on a flat surface.
- Measure the inner diameter of the ring in millimeters using a ruler.
- Match the diameter to the chart below.
US Ring Size Chart
| US Size | Inner Diameter (mm) | Circumference (mm) |
|---|---|---|
| 5 | 15.7 | 49.3 |
| 6 | 16.5 | 51.9 |
| 7 | 17.3 | 54.4 |
| 8 | 18.2 | 57.0 |
| 9 | 19.0 | 59.5 |
| 10 | 19.8 | 62.1 |
Most JewelryRich rings are available in sizes 5–9. Contact us if you need a custom size outside this range.
Expert Tips for Accurate Ring Sizing
- Measure at the end of the day. Fingers are slightly larger in the evening due to natural swelling — this gives you the most accurate fit for everyday wear.
- Avoid cold temperatures. Cold causes fingers to shrink. Measure when your hands are at a normal, comfortable temperature.
- If between sizes, go larger. A slightly loose ring is easier to resize than one that's too tight.
- Consider the band width. Wider bands (5mm+) tend to fit more snugly. If you're ordering a wide band, consider going up half a size.
- Measure the correct finger. Ring sizes can vary between fingers and between your dominant and non-dominant hand.
- Measure 2–3 times. Take multiple measurements and use the average for the most reliable result.
Frequently Asked Questions
What if I don't know my ring size?
Use the paper method above, or visit a local jeweler for a professional measurement. You can also contact our team and we'll guide you through the process.
Do you offer complimentary ring resizing?
Yes. All JewelryRich rings include one complimentary resizing within the first year of purchase. Simply contact us at sales@jewelryrich.com with your order number to arrange. See our full warranty and returns policy.
Are your rings available in half sizes?
Our standard sizes are 5–9 (whole sizes). Custom sizing is available — please contact us before placing your order to discuss your requirements.
How do I size a ring as a surprise gift?
A few discreet methods: borrow a ring she already wears on that finger and trace the inner circle; ask a close friend or family member; or check if she has mentioned her size before. When in doubt, size up — resizing down is always easier. Our complimentary resizing service makes this stress-free.
What is the most common women's ring size?
The most common women's ring size is US 6–7. For men, the most common size is US 9–10. These are averages — always measure for the most accurate fit.
Ready to Find Your Perfect Ring?
Browse our full collection of fine jewelry, including engagement rings, wedding bands, and diamond jewelry. Every piece is made to order in 18K gold with GIA or IGI certified diamonds.
Still unsure? Contact our jewelry experts — we're happy to help you find the perfect fit.