1. To measure your finger, gently wrap the measuring tape around the base of your finger. Ensure it’s snug but not too tight, allowing for a comfortable fit without squeezing. If you’re using a piece of string or a strip of paper instead, mark the point where the end meets the rest of the material. Your ring needs to fit over your knuckle, which is often the widest part of your finger. Therefore, to ensure a comfortable fit, measure both the base of your finger and around your knuckle. If your knuckle is significantly larger than the base of your finger, consider using the average of these two measurements. This way, your ring will fit comfortably over the knuckle but not be too loose at the base.

2. Next, record the measurement. If you are using a measuring tape, directly read the measurement from the tape at the point where it overlaps. If you are using a string or paper, lay the marked string or paper flat on a surface and measure its length with a ruler. Ensure the ruler is placed straight and the string or paper is not stretched, as this could lead to inaccurate measurements.

3. Then, use a ring size chart to convert your measurement to the corresponding ring size. Ring size charts are easily available online and typically include sizes for different regions, such as the US, UK, and Europe. Be sure to select the correct chart for your region to avoid any discrepancies. The chart will match your measurement to a specific ring size, making it easy to find the right fit.

4. It's important to consider the dominant hand factor when measuring your ring size. The same finger on your left and right hands may differ slightly in size. Typically, the dominant hand—the one you use more frequently—might be slightly larger due to increased muscle development and usage. Therefore, measure the specific finger on the hand you plan to wear the ring. This ensures a more accurate fit, as even minor differences can affect the comfort and security of the ring.

1. Measure with printed PDF

2. Measure with PDF on Mobile

3. Measure with cut-out-ruler

If you don't have a ring size chart or
measuring tape, you can still measure your ring size accurately with just a
ruler. Here's how: Take a flexible, non-stretchy string or strip of paper, wrap
it around the base of your finger, and mark where it overlaps. Lay it flat and
measure the length in millimeters. Use an online ring size chart to find your
size, accounting for regional differences. For wider bands, consider going up
half a size for comfort. Repeat this process at different times of the day for
the best fit. For a step-by-step visual guide, check out our YouTube video
guide.

4. Measure with measuring tape

To ensure accurate ring size measurement with
a string, make sure it fits comfortably around your finger—neither too tight
nor too loose. A tight string may lead to an overly snug ring, while a loose
one might cause the ring to slip off. After marking and measuring the string,
compare your measurement with multiple ring size charts for consistency. For
better precision, use a minimally stretchy material like embroidery floss.
Double-check your measurements at different times of the day to account for finger
size fluctuations. For a step-by-step guide, check out our YouTube video
tutorial.

リングサイズ表

リングサイズ表は、指の測定値を異なる地域の標準サイズと比較することで適切なフィット感を見つけるのに役立ちます。さまざまなサイズシステムが世界中で使用されています。たとえば、アメリカとカナダでは数字を使用し、イギリスでは文字、ヨーロッパではミリメートルの円周を使用します。これらの違いは歴史的および測定方法の違いによるものであり、ある国のサイズが他の国の同じサイズと一致しないことがあります。外国から指輪を購入する場合は、リングサイズ表を使用してシステムの間で変換し、完璧なフィット感を確保しましょう。以下のリングサイザーを使用して、各国のサイズを比較してください。 

アメリカ/カナダ 

イギリス/オーストラリア 

ヨーロッパ 

日本 

スイス 

4.0 

H 

46.5 

7 

7.75 

4.5 

I 

48.0 

8 

8.5 

5.0 

J 

49.0 

9 

9.25 

5.5 

K 

50.3 

10 

9.75 

6.0 

L 

51.5 

11 

10.25 

6.5 

M 

53.1 

12 

11.0 

7.0 

N 

54.4 

13 

11.75 

7.5 

O 

55.7 

14 

12.25 

8.0 

P 

57.0 

15 

13.0 

8.5 

Q 

58.3 

16 

13.5 

9.0 

R 

59.5 

17 

14.25 

9.5 

S 

60.8 

18 

15.0 

10.0 

T 

62.1 

19 

15.75 

10.5 

U 

63.4 

20 

16.25 

11.0 

V 

64.6 

21 

17.0 

11.5 

W 

65.9 

22 

17.75 

12.0 

X 

67.2 

23 

18.25 

12.5 

Y 

68.5 

24 

19.0 

13.0 

Z 

69.7 

25 

19.75 

13.5 

Z+1 

71.0 

26 

20.25 

14.0 

Z+2 

72.3 

27 

21.0 

14.5 

Z+3 

73.6 

28 

21.75 

15.0 

 

74.8 

29 

22.5 

 

センチメートルまたはインチによるリングサイズ

アメリカとカナダでは、リングサイズは数字で表示され、インチまたはセンチメートルには直接対応していません。サイズはリングの内周または内径から導出されますが、数字は標準化されたスケールの一部です。 

イギリスとオーストラリアでは、リングサイズはアルファベット(例:H, I, J)を使用し、インチまたはセンチメートルに直接結びついていません。アメリカのシステムと同様に、これらのサイズは特定の内周または内径に対応しますが、文字そのものは独自のスケールの一部です。