Ring Size Measurement Guide
Find your ideal size
1. Choose an existing ring that fits the preferred finger.
2. Calculate the ring’s interior diameter in millimeters by using a ruler.
3. To get your ring size, use the table below or use our SizeMeister Tool further down below.
You can also download our FREE Printable Ring Size Guide here
| INTERNAL DIAMETER (MM) | 14.1 | 14.9 | 15.7 | 16.5 | 17.3 | 18.1 | 19.0 | 19.8 | 20.6 | 21.4 | 22.2 |
| US/CANADA RING SIZE | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| UK/AUSTRALIA RING SIZE | F | H | J | L | N | P | R | T | V | X | Z |
| GERMAN RING SIZE | 14 | 15 | 15 3/4 | 16 1/2 | 17 1/4 | 18 | 19 | 20 | 20 3/4 | 21 1/4 | 22 |
Measuring your finger
How to measure my finger’s diameter?
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Wherever you want the ring to be on your finger, wrap a strip of paper around it.
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To discover your ideal fit, make sure the paper is stretched tightly around your finger. The tighter, the better.
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Make a mark where the paper overlaps, then use a ruler to calculate the distance (in millimeters).
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To get your ring size, use the table below or use our SizeMeister Tool down below.
You can also download our FREE Printable Ring Size Guide here
| CIRCUMFERENCE (MM) | 44.2 | 46.8 | 49.3 | 51.9 | 54.4 | 57.0 | 59.5 | 62.1 | 65.6 | 67.2 | 67.7 |
| US/CANADA RING SIZE | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| UK/AUSTRALIA RING SIZE | F | H | J | L | N | P | R | T | V | X | Z |
| GERMAN RING SIZE | 14 | 15 | 15 3/4 | 16 1/2 | 17 1/4 | 18 | 19 | 20 | 20 3/4 | 21 1/4 | 22 |
🤗Now that you have finished Measuring your finger:
You can use our SeizeMeister tool to convert your measurements to your desired country size! 👉
💍 SizeMeister is a little tool developed by us at Ddreamer Jewelry that allows you to convert the measurements done to your finger into any country standard. It comes in very handy. Specially if you have measured your girlfriends ring size without her knowing and want to surprise her with an engagement ring! ❤️
So Bookmark this Page if you ever want to convert your ring sizes!
You can enter your measurements in Millimeters, centimeters and inches. But be sure to select the unit type. What you will measure if using a piece of string or paper strip on your finger, is the circumference. If you are measuring with a ruler your ring however, it will be your diameter.
If needed, add decimal points for fractions so the measurement is more accurate.
And finally select the country you would like to convert to and press convert 😎
Instructions for Accurate Results:
For accurate results, measure the inner diameter or circumference of a ring that fits well with a ruler. If you are using a string or a paper strip for the circumference, make sure its nice and snug, but not too tight around your finger , as the ring should be able to pass through the knuckle too without pulling your skin off.
Are you a jeweler or jewelry store owner and want this tool too? Check out more of our tools!
SizeMeister
Diameter is the width across the ring. Circumference is the distance around the ring.
Choose the unit of measurement you're using.
Enter your ring measurement here. Use a decimal point for fractions (e.g., 16.5).
Choose the country standard you want to convert to.
For accurate results, measure the inner diameter or circumference of a ring that fits well. If using string or paper strip for circumference, ensure it's snug but not tight around your finger.
Ring Size Converter Pro
👈You also can use our International Ring Size Converter
If you know your size already and ever wondered what is your ring size conversion into other country sizes, check out our nifty little plugin that we have developed. So you don’t have to stare endlessly at static ring size charts!
And for all of those of you – Jewelers, and Jewelry store owners out there; If you like this little tool, you can get it right here! We have both a free and a Pro version 🥰
Advice & Techniques
When your fingers are at their biggest, measure them at the end of the day.
Make sure your fingers are warm because the cold can cause them to shrink by up to half a size.
Last but not least, avoid measuring after eating appetizers and beverages because both alcohol and salt can cause swelling in your fingertips.
Still not sure?
Any more questions you may have towards discovering your ideal fit may be answered by our Customer team.
