Practical guidance for choosing shine, fit, styling, care, gifting, customization, and wholesale-ready jewelry.
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Finding the perfect ring size can be tricky, especially when shopping online. At JWLZ, we use US ring sizes as the standard for all our products. This guide will help you accurately measure your finger, understand size conversions, and choose a ring that fits comfortably.
Step 1: Measure Your Finger
Cut a thin strip of paper or use a piece of string.
Wrap it around the finger where you plan to wear the ring. Make sure it's snug but not too tight.
Mark the point where the ends meet.
Measure the length from the starting end to the mark using a ruler – this is your finger circumference.
💡 Tip: Measure your finger at the end of the day when it’s largest, and avoid measuring when your hands are cold.
Step 2: Find Your US Ring Size
Use the table below to match your finger circumference to the US ring size:
Circumference (mm)
US Size
46.8
4
49.3
5
51.8
6
54.5
7
57.2
8
59.4
9
62.2
10
64.7
11
66.9
12
If your measurement falls between sizes, round up to the next size for comfort.
Step 3: Convert to Other International Sizes (Optional)
If you’re familiar with UK, EU, or Japan sizes, here’s a quick conversion:
US
UK & AUS
EU
Japan/HK
4
H 1/2
46.5
7
5
J 1/2
49
9
6
M
51.5
11
7
O
54
14
8
Q
57
16
9
R 3/4
59.5
18
10
T 1/2
62
20
11
V 1/2
64.5
23
12
Y
67
25
Remember: All JWLZ rings are sized in US standard, so these conversions are for reference only.
Step 4: Tips for Accurate Sizing
Avoid measuring over knuckles that are unusually large or small.
If you’re between two sizes, choose the larger size.
Consider the ring style: wide bands may require 0.5–1 size larger for comfort.
Re-measure if your finger size fluctuates due to weather, exercise, or time of day.
Step 5: Using Our Visual Guide
Refer to our JWLZ Ring Size Guide Image for step-by-step instructions. It shows exactly how to wrap the paper, mark the circumference, and convert your measurement to the US size.
Shop Your Perfect Fit: Now that you know your ring size, explore our collection and find a ring that fits perfectly. 💍 Tip: Keep this guide handy for future purchases or gifting loved ones!
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