Ring Size Guide
To measure ring size at home, use our ring sizer and step-by-step methods, check the US size chart to convert international or measured sizes, and learn what to do if you’re between sizes.
Get our ring sizer & receive $5 off
Find your perfect ring size at home with this easy-to-use US ring sizer.
Covers sizes 1–17, including half sizes, so you can confidently order the ring that fits just right.
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Includes a $5 coupon toward your future ring purchase. The coupon will be included in your package.
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Final sale - no returns or exchanges
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Sent as regular stamped mail without tracking - please allow 5-10 days for delivery
Perfect for couples, gifts, or anyone unsure of their ring size.
What Ring Size am I?
If you know your US ring size from a jeweler or a ring sizer, you can order confidently. If your size came from a string or tape method, it can be less accurate - use our ring sizer or the ring-measurement method below to confirm.
If you have a ring that fits but don’t know its size, the most accurate method is to measure the inside diameter (mm) with digital calipers, then convert that measurement to your US ring size using the chart below. You can also have it measured on a ring mandrel at home. Tracing an outline or using a ruler is often inaccurate.
If you’re not sure of your size, the most accurate option is a physical ring sizer. Order one from us before you buy and get $5 off your ring order so you can confirm your fit first. Prefer to measure at home? That works too - we’ll include a free ring sizer with every purchase.
How to Measure Ring Size at home
Use our ring sizer
Accuracy: ⭐⭐⭐⭐⭐ (5/5)
If you’re measuring ring size at home, an easy and accurate option is using a physical ring sizer. You can get a ring sizer from us before you buy, and you’ll receive $5 off your ring order. Simply try the sizer on your finger, choose the size that feels snug at the base but still slides over the knuckle with slight resistance.
Measure an existing ring
Accuracy: ⭐⭐⭐⭐⭐ (5/5)
Measure the inside diameter (mm) of a ring that fits using digital calipers. Then match your measurement to the US size chart below.
No calipers? Take your ring to a jeweler and have them measure it on a ring mandrel.
Measure your finger
Accuracy: ⭐⭐☆☆☆ (2/5)
If you don’t have a ring sizer, you can use the string method to measure your finger at home. Wrap a non-stretch string around the base of your finger twice so it’s snug but not tight, then mark where the ends meet. Lay the string flat and measure the total length in millimeters (mm), then divide by 2 to get your finger’s circumference. Use the US size chart below to find your closest ring size.
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Ring Size Chart
Use the chart below to convert your measurement into the correct ring size.
If you measured the inside diameter (mm) of a ring or your finger circumference (mm), match it to the closest value in the table to find your US ring size.
We also include international size conversions (Canada, UK, Germany, France, Australia, and Ireland) for reference.
| US | Inside Diameter (mm) | Circumference (mm) | Canada | UK | Germany | France | Australia | Ireland |
|---|---|---|---|---|---|---|---|---|
| 3 | 14.1 | 44.3 | 3 | F | 44 | 44 | F | F |
| 3.5 | 14.5 | 45.6 | 3.5 | G | 46 | 46 | G | G |
| 4 | 14.9 | 46.8 | 4 | H | 47 | 47 | H | H |
| 4.5 | 15.3 | 48.1 | 4.5 | I | 48 | 48 | I | I |
| 5 | 15.7 | 49.3 | 5 | J 1/2 | 49 | 49 | J 1/2 | J 1/2 |
| 5.5 | 16.1 | 50.6 | 5.5 | K 1/2 | 51 | 51 | K 1/2 | K 1/2 |
| 6 | 16.5 | 51.8 | 6 | L 1/2 | 52 | 52 | L 1/2 | L 1/2 |
| 6.5 | 16.9 | 53.1 | 6.5 | M 1/2 | 53 | 53 | M 1/2 | M 1/2 |
| 7 | 17.3 | 54.3 | 7 | N 1/2 | 54 | 54 | N 1/2 | N 1/2 |
| 7.5 | 17.7 | 55.6 | 7.5 | O 1/2 | 56 | 56 | O 1/2 | O 1/2 |
| 8 | 18.1 | 56.9 | 8 | P 1/2 | 57 | 57 | P 1/2 | P 1/2 |
| 8.5 | 18.5 | 58.1 | 8.5 | Q 1/2 | 58 | 58 | Q 1/2 | Q 1/2 |
| 9 | 19.0 | 59.7 | 9 | R 1/2 | 60 | 60 | R 1/2 | R 1/2 |
| 9.5 | 19.4 | 60.9 | 9.5 | S 1/2 | 61 | 61 | S 1/2 | S 1/2 |
| 10 | 19.8 | 62.2 | 10 | T 1/2 | 62 | 62 | T 1/2 | T 1/2 |
| 10.5 | 20.2 | 63.5 | 10.5 | U 1/2 | 64 | 64 | U 1/2 | U 1/2 |
| 11 | 20.6 | 64.7 | 11 | V 1/2 | 65 | 65 | V 1/2 | V 1/2 |
| 11.5 | 21.0 | 66.0 | 11.5 | W 1/2 | 66 | 66 | W 1/2 | W 1/2 |
| 12 | 21.4 | 67.2 | 12 | X 1/2 | 67 | 67 | X 1/2 | X 1/2 |
| 12.5 | 21.8 | 68.5 | 12.5 | Z | 69 | 69 | Z | Z |
| 13 | 22.2 | 69.7 | 13 | Z+1 | 70 | 70 | Z+1 | Z+1 |
| 13.5 | 22.6 | 71.0 | 13.5 | Z+2 | 71 | 71 | Z+2 | Z+2 |
| 14 | 23.2 | 72.8 | 14 | Z+3 | 73 | 73 | Z+3 | Z+3 |
| 14.5 | 23.6 | 74.0 | 14.5 | Z+4 | 74 | 74 | Z+4 | Z+4 |
| 15 | 24.0 | 75.4 | 15 | Z+5 | 75 | 75 | Z+5 | Z+5 |
What to do if you're between sizes
If your measurement falls between two ring sizes, comfortability should guide your choice.
In most cases:
- Choose the next closest half size up for a more comfortable fit
- Fingers naturally swell throughout the day, so sizing up helps avoid tightness
Consider sizing up if:
- The ring feels tight at the base, or it’s very difficult to remove
- You’re converting from an international size - it’s common for international sizes to land between US sizes (often around a US quarter size). In those cases, we recommend going up to the next closest US half size.
You may prefer the smaller size if:
- The ring feels like it could slip off during normal wear
- It feels overly loose at the base (a little looseness can be normal if you have larger knuckles, as long as the ring stays secure)
Couples Ring Sizing Tips (His & Hers)
Mens and womens rings use the same US size scale - there’s no separate “mens” or “womens” sizing. If you’re ordering a couples ring set, confirm both sizes before checkout. Many sizing issues come from simply mixing up which size belongs to which ring.
His and Hers
Couples Rings
How a ring should fit
A properly fitting ring should feel secure and comfortable for everyday wear. It shouldn't feel like it's going to fall off or like it’s cutting off circulation.
A good fit means:
- Snug at the base of your finger without feeling tight or painful
- Slides over the knuckle with slight resistance (you may need a gentle twist)
- Stays in place during normal hand movement.
- Feels comfortable throughout the day, even as your fingers warm up
- Doesn’t feel like it's going to fall off during everyday wear.
If you have larger knuckles, some looseness at the base of the finger is normal - as long as the ring stays secure and comfortable overall.
Keep in mind:
Finger size naturally changes due to temperature, time of day, activity, and hydration. Measuring at room temperature, ideally in the evening, gives the most accurate “everyday wear” fit.
If your ring meets these criteria, you’ve likely chosen the correct size.
Comfort Fit vs. Standard Fit
Comfort Fit
Comfort-fit rings have a gently rounded interior that reduces contact with the finger, so they often feel a little roomier than standard-fit rings in the same size. This is especially noticeable on wider bands (like 6mm and 8mm), where the rounded interior is easier to feel during everyday wear. If you were sized using a standard-fit ring, a comfort-fit ring may feel more forgiving in that same size.
Standard Fit
Standard-fit engagement rings have a flatter interior that sits with more surface contact against the finger, giving them a secure, traditional feel. This fit is common for women’s engagement rings. Because the interior is less rounded than comfort-fit styles, standard-fit rings can feel slightly more snug at the same size - particularly when sliding over the knuckle or during natural finger swelling throughout the day.
Foreverings Free Size Exchanges
Our commitment to you goes beyond delivery - we want you to feel confident in your fit. If your ring size isn’t quite right, we’re happy to help you get the size that feels best.
Size Exchanges: If your ring doesn’t fit, we offer free size exchanges within 21 days so you can find the perfect fit.
How it works: Every order includes a free ring sizer, so you can confirm your correct size at home and simply tell us the size you need for your exchange. Go through our exchange portal to submit your request.
For full details, please see our Exchanges & Returns policy page.
Ring Size FAQ
Yes. All of our rings are available in whole and half sizes. If you’re between sizes, we recommend choosing the next closest half size up.
It happens. If your ring doesn’t fit, we’re happy to offer a free size exchange. Every order includes a ring sizer, so you can confirm your correct size at home and send us the size you’d like for your exchange. Restrictions may apply, so please review our Return and Exchange Policy for full details.
The average ring size for women is between US size 5-8 (with 7 being the most common). Because this can vary greatly, we recommend getting our ring sizer to determine the perfect size.
The average ring size for men is between US size 8 and 11 (with 10 being the most common). Because this can vary greatly, we recommend getting our ring sizer to determine the perfect size.
A few reliable ways:
- Borrow a ring they already wear on the same finger and take it to a jeweler for sizing.
- Compare to a ring you already own that fits them well.
- Use your friend as a decoy to ask what size they are.
- Try-on at a store for fun.
Yes. If the size is not available for the ring you want, please contact us and we will make it for you.
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