Griha Ring Size Guide
Griha Threads & Treasure rings are listed in American numeric sizes, such as 7 and 7.5. If you know your Australian letter size, use the approximate conversion chart below to find your American size before choosing a ring.
Explore our sterling silver and gemstone rings.
Australian letters to American ring sizes
American sizing is also called US sizing. These conversions and measurements are approximate: charts can vary slightly, so professional sizing is best when you are unsure.
| Australian size | American size (approx.) | Inside diameter (mm) | Inside circumference (mm) |
|---|---|---|---|
| H | 4 | 14.9 | 46.8 |
| I | 4¼ | 15.3 | 48.0 |
| J | 4½ | 15.5 | 48.7 |
| K | 5 | 15.9 | 49.9 |
| L | 5½ | 16.3 | 51.2 |
| M | 5¾ | 16.7 | 52.4 |
| N | 6¼ | 17.1 | 53.7 |
| O | 6½ | 17.5 | 54.9 |
| P | 7 | 17.9 | 56.2 |
| Q | 7½ | 18.3 | 57.4 |
| R | 7¾ | 18.7 | 58.7 |
| S | 8¼ | 19.1 | 59.9 |
| T | 8¾ | 19.5 | 61.2 |
| U | 9 | 19.9 | 62.4 |
| V | 9½ | 20.3 | 63.7 |
| W | 10 | 20.7 | 65.0 |
| X | 10½ | 21.1 | 66.2 |
| Y | 10¾ | 21.5 | 67.5 |
| Z | 11¼ | 21.9 | 68.7 |
| Z+1 | 11¾ | 22.3 | 70.0 |
Check the available numeric sizes on each product, including our dainty rings and stackable rings. A conversion does not mean that every ring is available in that size.
Printable finger-measurement method
You can print these instructions and the chart for reference. Use a separate ruler marked in millimetres to measure your paper strip; this page is not a scaled ring-sizing template.
- Cut a narrow strip of non-stretchy paper.
- Wrap it comfortably around the base of the finger you want to size. Keep it snug, not tight.
- Mark where the paper overlaps, then lay it flat and measure from the starting end to the mark in millimetres.
- Check that the resulting loop can pass over your knuckle. If your knuckle is much wider than the base of your finger, ask a jeweller to help choose a secure, comfortable fit.
- Repeat the measurement and compare it with the circumference column above. Use the American numeric size when selecting your ring.
Measure when your hands are at a comfortable temperature, ideally later in the day. Paper measurements are a starting point, not a guarantee of fit.
Once you know your size, browse our sterling silver and gemstone ring collection.
Measure an existing ring
- Choose a ring that fits the same finger and hand comfortably.
- Measure straight across the centre of its inside opening in millimetres, excluding the metal band.
- Compare the measurement with the inside diameter column above.
Band width affects comfort. For a wider ring, ask a jeweller about the best fit rather than automatically choosing a larger size. Explore our statement rings and check each piece's sizing details.
Online-measurement checklist
- I am sizing the correct finger and hand.
- My hands are at a comfortable temperature.
- I have repeated my measurement with non-stretchy paper or a proper ring sizer.
- I have checked both comfort at the finger's base and clearance over the knuckle.
- I am choosing an American numeric size, such as 7 or 7.5, from the product's available options.
- I have considered the band's width and asked for professional advice if needed.
- If using an on-screen sizing tool, I have followed its calibration instructions. An uncalibrated screen image is not a reliable measurement.
Looking for a special find? Browse sale rings or our final-size rings, and confirm the listed size before ordering.
Unsure? Get professionally sized
If you are between sizes, have a larger knuckle or are choosing a wide band, we recommend professional sizing by a local jeweller. Ask for your American numeric size and let them know the style of ring you intend to wear.
Ready to find your next piece? Shop sterling silver and gemstone rings.
Visit our boutique
Prefer to explore our jewellery in person? Visit Griha Threads & Treasure at Shop 4, 5–9 Belgrave Street, Kogarah NSW 2217, Australia.