Size Guide
Size Guide
Find your perfect fit
All sizes are measured in millimeters for accuracy. Use the guides below for rings, bracelets, chains, and earrings — with full international size conversions.
Ring size guide
Measure your finger circumference in millimeters for the most accurate result. Ring sizes vary between countries — use the conversion table below to find your size.
How to measure your ring size
1
Cut a thin strip of paper about 10 cm long and 5 mm wide.
2
Wrap it snugly around the base of the finger you want to wear the ring on.
3
Mark where the paper overlaps with a pen.
4
Lay it flat and measure the length in millimeters — that is your circumference.
5
Find your circumference in the table below to get your size in US, EU, and UK.
Pro tip: Measure in the evening when your fingers are slightly larger. If you are between two sizes, always go up. For wide bands (6mm+), go one size up from your measurement.
Size calculator
Enter your measurement to find your size
US
EU / FR / DE
UK
| Circumference (mm) | Diameter (mm) | US Size | EU / FR / DE | UK / AU | IT / ES | JP / AS |
|---|---|---|---|---|---|---|
| 44.2 | 14.1 | 3 | 44 | F | 4 | 4 |
| 45.5 | 14.5 | 3.5 | 46 | G½ | 5.5 | 6 |
| 46.8 | 14.9 | 4 | 47 | H½ | 7 | 7 |
| 48.0 | 15.3 | 4.5 | 48 | I½ | 8 | 8 |
| 49.3 | 15.7 | 5 | 49 | J½ | 9.5 | 10 |
| 50.6 | 16.1 | 5.5 | 51 | K½ | 11 | 11 |
| 51.9 | 16.5 | 6 | 52 | L½ | 12 | 12 |
| 53.1 | 16.9 | 6.5 | 53 | M½ | 13.5 | 13 |
| 54.4 | 17.3 | 7 | 54 | N½ | 15 | 14 |
| 55.7 | 17.7 | 7.5 | 56 | O½ | 16 | 15 |
| 57.0 | 18.1 | 8 | 57 | P½ | 17.5 | 16 |
| 58.3 | 18.5 | 8.5 | 58 | Q½ | 18.5 | 17 |
| 59.5 | 18.9 | 9 | 60 | R½ | 20 | 18 |
| 60.8 | 19.4 | 9.5 | 61 | S½ | 21 | 19 |
| 62.1 | 19.8 | 10 | 62 | T½ | 22.5 | 20 |
| 63.4 | 20.2 | 10.5 | 63 | U½ | 23.5 | 21 |
| 64.6 | 20.6 | 11 | 65 | V½ | 25 | 22 |
| 65.9 | 21.0 | 11.5 | 66 | W½ | 26 | 23 |
| 67.2 | 21.4 | 12 | 67 | X½ | 27.5 | 24 |
| 68.5 | 21.8 | 12.5 | 69 | Z | 29 | 25 |
| 69.7 | 22.2 | 13 | 70 | Z+1 | 30 | 26 |
Not sure between two sizes?
Always go with the larger size. A ring that's slightly loose is more comfortable and easier to put on than one that's too tight.
Ordered the wrong size?
Contact us within 2 hours of your order and we'll correct it before shipping. After that, our 30-day return policy applies.
Bracelet size guide
Atlas bracelets are available in standard sizes based on wrist circumference. Measure your wrist and add the recommended ease for your preferred fit.
How to measure your wrist
1
Wrap a flexible tape measure or a strip of paper around your wrist, just below the wrist bone.
2
Note the measurement in millimeters.
3
Add 10 to 20mm for a comfortable fit, or 20 to 30mm for a relaxed fit.
Which fit to choose? A snug fit sits close to the wrist (add 10mm). A standard fit has a little movement (add 15 to 20mm). A relaxed fit hangs loosely (add 25 to 30mm). Most men prefer a standard or relaxed fit.
Bracelet calculator
Enter your wrist measurement to find your size
| Size label | Bracelet length (mm) | Wrist circumference (mm) | US / UK / AU | EU / FR / DE |
|---|---|---|---|---|
| XS | 160 mm | 140, 150 mm / 5.5, 5.9" | 6.3" | 16 cm |
| S | 170 mm | 150, 160 mm / 5.9, 6.3" | 6.7" | 17 cm |
| M | 180 mm | 160, 170 mm / 6.3, 6.7" | 7.1" | 18 cm |
| L | 190 mm | 170, 180 mm / 6.7, 7.1" | 7.5" | 19 cm |
| XL | 200 mm | 180, 195 mm / 7.1, 7.7" | 7.9" | 20 cm |
| XXL | 215 mm | 195 mm and above / 7.7"+ | 8.5" | 21.5 cm |
Most common sizes: M (180mm) and L (190mm) fit the majority of men. If you're unsure, go with L for a comfortable everyday fit.
Chain & necklace length guide
Chain length determines how the necklace sits on your chest. Use the guide below to choose the right length for your style and build.
How to measure
1
Use a flexible tape measure or a piece of string around your neck at the desired length.
2
Measure the string against a ruler in centimeters.
3
Compare with the chart below to choose your ideal length.
| Length | cm | inches | Where it sits | Best for |
|---|---|---|---|---|
| 40 cm | 40 | 16" | At the base of the neck | Choker style, slim build |
| 45 cm | 45 | 18" | Just below the collarbone | Most popular, versatile |
| 50 cm | 50 | 20" | On the upper chest | Most popular, relaxed fit |
| 55 cm | 55 | 22" | Mid-chest | Layering, athletic build |
| 60 cm | 60 | 24" | Lower chest | Statement wear, layering |
| 70 cm | 70 | 28" | Below chest | Long pendant, oversized look |
Layering tip: For a stacked look, choose chains at least 5 cm apart in length. The most popular combination is 45 cm + 55 cm, or 50 cm + 60 cm.
Slim or average build
45 to 50 cm sits at the sweet spot — visible but not overwhelming. A 45 cm chain on a slim frame reads similar to a 50 cm chain on a broader frame.
Athletic or broader build
Opt for 50 to 60 cm for the same visual effect. Chains shorter than 45 cm can feel tight on a larger neck.
Earring size guide
Atlas earring sizes refer to the diameter of the stud or hoop, and the gauge (thickness) of the post. Standard sizing works for most pierced ears.
| Style | Diameter / Size | Post gauge | Standard piercing? | Notes |
|---|---|---|---|---|
| Stud, small | 4 to 6 mm | 0.8 mm (20G) | Yes | Subtle, everyday wear |
| Stud, medium | 6 to 8 mm | 0.8 mm (20G) | Yes | Most popular size |
| Stud, large | 8 to 12 mm | 1.0 mm (18G) | Yes | Statement look |
| Hoop, small | 8 to 12 mm | 1.0 mm (18G) | Yes | Close to ear, minimal |
| Hoop, medium | 12 to 18 mm | 1.0 mm (18G) | Yes | Most popular hoop |
| Hoop, large | 18 to 25 mm | 1.2 mm (16G) | Yes | Bold, statement |
Standard piercing gauge: Most ear piercings are done at 20G (0.8mm) or 18G (1.0mm). All Atlas earrings are compatible with standard piercings. If you have stretched or gauged piercings, contact us before ordering.
316L stainless steel posts
All Atlas earring posts are made from 316L surgical stainless steel — nickel-free, hypoallergenic, and safe for sensitive ears.
First time wearing earrings?
Start with a medium stud (6 to 8mm). It's the most versatile size and works for any occasion from casual to formal.
Still not sure about your size?
Contact us →
Our team is happy to help you find the right fit before you order.