Accurate • Easy to Use • Reusable
 
Never guess your ring size again! Our adjustable ring sizer offers a quick and reliable way to measure your ring size at home. Whether you’re choosing an engagement ring, a wedding band, or treating yourself to something special, this tool makes it easy to get the perfect fit before you buy.
Designed for comfort and precision, this reusable sizer is an essential accessory for anyone shopping for rings online.
 
Key Features
✔ Accurate measurements – Determines your size before purchasing
✔ US measurement scale with UK conversion chart included
✔ Comfortable & adjustable — similar to a mini belt
✔ Reusable for future purchases
✔ Ideal for online shopping
✔ Suitable for men and women
 
How To Use Your Adjustable Ring Sizer
Slip the sizer onto your finger like you would a ring.
Pull the tab gently until it fits snugly.
Ensure it slides over the knuckle comfortably.
Read the indicated letter/number size through the viewing window.
Repeat on different fingers if needed - finger sizes can vary!
 
Tip: Measure your finger at the end of the day when your hands are warm.
Avoid measuring cold hands, as fingers are slightly smaller.
 
Ring Size Conversion Chart
 
US Size
UK Size
Diameter (mm)
3
F
14.1
3.5
G
14.5
4
H
14.9
4.5
I
15.3
5
J
15.7
5.5
K
16.1
6
L
16.5
6.5
M
16.9
7
N
17.3
7.5
O
17.7
8
P
18.1
8.5
Q
18.5
9
R
19.0
9.5
S
19.4
10
T
19.8
10.5
U
20.2
11
V
20.6
11.5
W
21.0
12
X
21.4
12.5
Y
21.8
13
Z
22.2
 
 
Sizes may vary slightly depending on finger shape and time of day.