Find Your
Ring Size
Find your perfect ring size at home in minutes. Try our true-to-size visualizer, instant converter and printable sizer — so every ring fits flawlessly, the first time.
See your size, true to life
Drag the dial to preview a ring at its real on-screen size, or use the converter for an exact US / UK / EU match.
True-to-size preview
Hold a ring to your screen and line up its inside edge with the bright circle. The diamond marks the top of the ring.
Calibrate to your screen for accuracy
Match the bar below to a real object so the preview is sized correctly.
Lay a credit or ID card’s short edge across the bar and drag until they match.
Enter a circumference of 30–80 mm (about 1.2–3.1 in).
Enter a diameter of 10–26 mm (about 0.4–1.0 in).
Your size is approximately — (US).
Between two sizes? Size up — especially for wider bands. Your result updates the true-to-size preview on the left automatically.
Measure at day’s end
Hands are warmest and largest later in the day — avoid measuring when cold or post-workout.
Mind the knuckle
If your knuckle is larger than your finger base, size to slide over it comfortably while still feeling secure.
Wider bands fit snugger
For bands 6 mm or wider, size up a quarter to half size.
Measure more than once
Take three readings on different days and use the average.
Match the finger
Every finger differs — size the exact one the ring will live on.
Not sure — or shopping a surprise?
Shopping a surprise?
Most styles are resizable — and a gift card is the perfect no-pressure backup if you’re unsure of size.
Give a gift cardTalk to a concierge
Real jewelers, seven days a week, to help you get the fit exactly right.
Book a consultHow to measure at home
No tools on hand? You only need a ring you own, or a strip of paper and a ruler.
Measure a ring you own
Take a ring that already fits the right finger and measure straight across the inside in millimeters. Enter that diameter in the studio — the most accurate at-home method.
The string method
Wrap a thin strip of paper or string snugly around the base of your finger. Mark the overlap, lay it flat on a ruler, and measure the length in millimeters.
Print our sizer
Download the Amorati printable ring sizer, print at 100% (no scaling), and match a ring to the circles or wrap the cut-out strip around your finger.
Ring size chart
Match your finger’s diameter or circumference in millimeters to your US ring size.
| US / Canada | Inside Diameter (mm) | Inside Diameter (in) |
|---|
Need a size outside this range? Our concierge can help with US 3–13.5+.
Ring sizing FAQs
Reviewed by the Amorati jewelry team. This guide reflects standard GIA/ISO sizing references and the at-home methods our concierge uses every day. Sizing is approximate; for high-value or non-resizable styles, confirm with a professional or request our complimentary at-home sizer before ordering. Questions? Call 844-474-7417.
Free resizing help
Most styles are resizable. Unsure of fit? We’ll guide you before you buy.
Free shipping & returns
If the fit isn’t right, returns are always free and easy.
Concierge sizing
Personal guidance from real jewelers, seven days a week.
Found your size?
Explore engagement rings, wedding bands and everyday pieces crafted to the Amorati Standard — premium stones and solid metals, never as extras.