Size Guides
Find Your Fit
Find your perfect ring size - without the guesswork. Use our quick measuring methods and size guide to make sure your ring fits comfortably from day one. We use US ring sizes (6–15). Most people choose 9–11 for men and 6–9 for women.
Find Out Your Ring Size with ChatGPT
We can help you find your ring size directly with ChatGPT. Just follow these steps below carefully:
Use one of the following:
- A credit or debit card
- A ruler (placed flat)
Then prepare your hand:
- Place your hand on a flat surface (like a table)
- Keep your finger straight and relaxed
- Place the reference object right next to your finger
- Make sure it sits side by side with your finger — not above or below
- Use good lighting (avoid shadows and reflections)
- Use a plain background (like a table or white paper)
- Make sure the photo is clear and in focus
When your photo is ready:
- Open ChatGPT
- Upload your photo
- Write: “Hi, can you help me find my US ring size from this photo?”
ChatGPT will:
- Measure your finger using the reference object
- Calculate the correct size
- Give you your approximate US ring size
Printable Ring Size Guide
Find your ring size in minutes directly from home.
Download and print our size guide to get an accurate fit.
How to use iit
1. Print at 100% scale
Make sure the document is printed in actual size (100%) - not scaled.
2. Use a ring you already have
Place your ring on the circles. The correct size is where the inside edge of your ring perfectly matches the circle.
Measure your finger at home
Get your exact ring size in minutes
All you need: a piece of paper, scissors, and a ruler - or use a digital measuring tool on your phone.
What to do
Cut a strip of paper about 5 mm wide and 10 cm long. Wrap it snugly around the base of your finger and mark where it overlaps.
The length in millimeters = your finger circumference.
Match it with our conversion chart.
If you fall between two sizes, pick the smaller size.
If your knuckle is much larger than your finger base, measure both and choose the size in between.
Measure a ring you already own
Use a ring you already wear - it’s the quickest way to get it right.
What to do
Take a ring that fits well and measure its inside diameter. Place a ruler straight across the inside edges (mm).
Use our conversion chart to find the corresponding US size.
CONVERSION CHART
Use the size chart below to find your size match.
Not sure where to start? Click here for our step-by-step guide to measuring your ring size.
| US Size | Inside Diameter (mm) | Circumference (mm) |
|---|---|---|
| 6 | 16.51 | 51.9 |
| 7 | 17.32 | 54.5 |
| 8 | 18.14 | 57.0 |
| 9 | 18.95 | 59.5 |
| 10 | 19.76 | 62.1 |
| 11 | 20.57 | 64.6 |
| 12 | 21.39 | 67.2 |
| 13 | 22.20 | 69.7 |
| 14 | 23.01 | 72.3 |
| 15 | 23.83 | 74.8 |
Ring Sizing Tips
You can wear your Tapster ring on any finger. However for most people, the index, middle or ring finger gives the best fit for everyday use.
Note: Each finger and each hand can be a different size. Always measure the finger you plan to wear the ring on most of the time.
If you’re between sizes, choose the larger one - it should feel comfortable, not tight. The ring should sit securely on your finger.
Note: Consider your knuckle. If your knuckle is wider than the base of your finger, make sure the ring can slide over it comfortably.
Fingers expand throughout the day. Measure in the evening when they’re at their largest.
Avoid measuring when cold. Cold hands shrink your fingers. Wait until they’re at a normal temperature for a more accurate result.
Take a minute to measure twice - it reduces the risk of exchanges or dissatisfactions.
Your ring should feel secure but comfortable. If it’s too tight, you’re unlikely to wear it regularly.
Still Not Sure?
Instead of choosing a size, select “I don’t know my size” and we’ll send you a ring sizer to use at home.
If it’s not a perfect fit the first time, we’ll exchange it for you.
You’ll get the right size no worry!
