Find Your Perfect Fit
Getting your ring size right is the most important step before ordering. Use this guide to measure accurately at home, or reach out and we will help you find your size.
How to Measure at Home
You do not need any special tools. Choose either method below depending on what you have available.
- Cut a thin strip of paper or string about 10cm long.
- Wrap it snugly around the base of the finger you want to size (not too tight).
- Mark where the strip overlaps with a pen.
- Lay it flat and measure the length in millimetres. This is your circumference.
- Use the size chart to find your ring size.
- Find a ring that already fits the correct finger well.
- Place it on a flat surface and measure the inside diameter in millimetres.
- Use the size chart to match the diameter to your ring size.
- If between two sizes, we recommend going up to the larger size.
- Fingers swell slightly in the evening and in warm weather. Measure at the end of the day for the most accurate fit.
- Measure the same finger on the hand you plan to wear the ring on. Dominant hands are often slightly larger.
- Measure 2 to 3 times and average the result.
- If your knuckle is larger than your base, measure both and choose a size in between.
- Wider bands fit tighter. If you are ordering a wide band (5mm or more), consider going up half a size.
Ring Size Chart
Tang & Co. uses US sizing. Use the chart below to convert from your local sizing system. Most popular sizes are highlighted.
| US / Canada | Diameter (mm) | Circumference (mm) | UK / AU | EU / France |
|---|---|---|---|---|
| 3 | 14.0 | 44.0 | F | 44 |
| 3 ½ | 14.4 | 45.3 | G ½ | 46 |
| 4 | 14.8 | 46.5 | H ½ | 47 |
| 4 ½ | 15.3 | 48.0 | I ½ | 48 |
| 5 | 15.7 | 49.3 | J ½ | 49 |
| 5 ½ | 16.1 | 50.6 | K ½ | 51 Popular |
| 6 | 16.5 | 51.9 | L ½ | 52 Popular |
| 6 ½ | 16.9 | 53.1 | M ½ | 53 Popular |
| 7 | 17.3 | 54.4 | N ½ | 54 Popular |
| 7 ½ | 17.7 | 55.7 | O ½ | 56 |
| 8 | 18.2 | 57.2 | P ½ | 57 |
| 8 ½ | 18.6 | 58.5 | Q ½ | 59 |
| 9 | 19.0 | 59.7 | R ½ | 60 |
| 9 ½ | 19.4 | 61.0 | S ½ | 61 |
| 10 | 19.8 | 62.1 | T ½ | 62 |
| 10 ½ | 20.2 | 63.5 | U ½ | 64 |
| 11 | 20.6 | 64.7 | V ½ | 65 |
| 11 ½ | 21.0 | 66.0 | W ½ | 66 |
| 12 | 21.4 | 67.2 | X ½ | 67 |
Size Calculator
Enter your measurement below and we will find your US ring size instantly.
Not Sure of Your Size?
Do not let sizing stop you from ordering. Here are a few ways we can help you get it right.
Send us a message and we will walk you through sizing step by step. We can advise based on your measurements or help you find a workaround if you are buying as a surprise.
If buying as a surprise, most customers order a size 6 or 6.5 as a starting point for women, or size 9 to 10 for men. We can resize after delivery where possible.
If your partner already wears rings, gently borrow one they wear on their ring finger and use the existing ring method described in the How to Measure tab.
Send us your measurements or any questions about sizing. We respond within 1 to 2 business days and are happy to help before you place your order.
Ready to Find Your Ring?
Now that you know your size, browse our collection of signature engagement rings.