Ring Size Guide
Finding your perfect ring size is easy — just follow one of the two methods below, then match your measurement to our conversion chart.
Method 1: Measure a Ring You Already Own
- Pick a ring that already fits the finger you want to wear your new ring on.
- Place it flat on a ruler and measure the inside diameter in millimeters (from one inner edge to the other).
- Match the number to the “Diameter (mm)” column in the chart below.
Method 2: String or Paper Method
- Cut a thin strip of paper (or a piece of string) about 10 cm long.
- Wrap it snugly — not tight — around the base of your finger.
- Mark the spot where the paper overlaps with a pen.
- Lay it flat and measure the marked length in millimeters — this is your circumference.
- Match the number to the “Circumference (mm)” column in the chart below.
Ring Size Conversion Chart
| EU Size | US Size | UK Size | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|
| 46 | 3.75 | H | 14.6 | 46 |
| 47 | 4 | I | 15.0 | 47 |
| 48 | 4.5 | J | 15.3 | 48 |
| 49 | 5 | J½ | 15.6 | 49 |
| 50 | 5.25 | K | 15.9 | 50 |
| 51 | 5.75 | L | 16.2 | 51 |
| 52 | 6 | L½ | 16.6 | 52 |
| 54 | 6.75 | N | 17.2 | 54 |
| 56 | 7.5 | O | 17.8 | 56 |
| 58 | 8.25 | Q | 18.5 | 58 |
| 60 | 9 | R½ | 19.1 | 60 |
| 62 | 10 | T½ | 19.7 | 62 |
Tips for the Perfect Fit
- Measure at the end of the day — fingers are slightly larger when warm.
- Avoid cold hands — your fingers shrink when cold, giving an inaccurate size.
- Wider bands fit tighter — for rings with bands over 6mm wide, go up half a size.
- Mind the knuckle — if your knuckle is much bigger than the base of your finger, size slightly up so the ring slides on easily.
- Between two sizes? Always go with the larger one. A ring that’s too small can’t be worn; a slightly loose ring can be adjusted.
- Dominant hand — fingers on your dominant hand tend to be a touch larger.
Still Unsure?
No problem — we’re here to help. Reach out through our Contact page and we’ll walk you through finding your perfect size. Every madebymoon ring is handcrafted and meant to fit you perfectly.
Remember: All our rings are handcrafted from 925 sterling silver with solid 14K gold details. Because each piece is unique, we recommend double-checking your size before ordering to ensure the perfect fit.
