# How to find your ring size (with conversion chart)

> How to measure your ring size at home with string or a ring that fits, and a chart of equivalences between circumference, diameter and EU and US sizes.

- Source: https://www.711grados.com/en/how-to-find-your-ring-size/
- Language: en
- Note: This entry was drafted with the help of AI and is pending review by the author.
- Published: 2026-08-15
- Updated: 2026-08-21
- Translation (es): https://www.711grados.com/es/como-saber-tu-talla-de-anillo/
- Author: Sandra Sánchez
- Site: 711 Grados (https://www.711grados.com/)

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Measuring your finger properly prevents a ring from being loose or tight. You can do it at home with a string and a ruler.

## Method 1: with a ring that already fits

Measure the inside diameter of the ring (in millimeters) with a ruler and look up the size in the chart.

## Method 2: with string or a paper strip

1. Wrap a string or paper strip around the base of the finger.
2. Mark where the ends overlap.
3. Measure the length in millimeters: that is the circumference.
4. Look up the size in the chart.

## Tips

- Measure in the late afternoon, when your finger is most swollen.
- Do not measure with cold hands.
- If your knuckle is much bigger than the base of your finger, choose an in-between size.
- A wide band needs a slightly larger size.
- Measure several times and take the average.

## Conversion chart

| Circumference (mm) | Inside diameter (mm) | EU size | US size |
|---|---|---|---|
| 49 | 15.6 | 49 | 5 |
| 52 | 16.5 | 52 | 6 |
| 54 | 17.3 | 54 | 7 |
| 57 | 18.2 | 57 | 8 |
| 59 | 19.0 | 59 | 9 |
| 62 | 19.8 | 62 | 10 |

Sizes vary between countries and makers: if in doubt, have yourself measured at a jewelry store.

## See also

- [How to choose an engagement ring and how much to spend](https://www.711grados.com/en/how-to-choose-an-engagement-ring/)
- [How to measure bracelet and bangle size](https://www.711grados.com/en/how-to-measure-bracelet-size/)
- [What chain length to choose for a necklace](https://www.711grados.com/en/necklace-length-guide/)