Practical tips to avoid mistakes
A few simple rules can help you avoid the most common mistakes. Always measure fingers at the end of the day: fingers swell slightly throughout the day, especially after exercise or in the heat, and a morning measurement can result in a size that is too small. Avoid measuring fingers when they are cold — they are thinner then than at their normal size.
When in doubt between two consecutive sizes, always choose the larger one for more comfort. A slightly loose ring is easier to wear than one that is too tight, especially in the summer when fingers swell more. If the finger knuckle is significantly wider than the base, measure both and take the size corresponding to the knuckle — the ring must be able to pass over it without force.
Ring size conversion chart
In France, ring sizes correspond to the internal circumference in millimeters. Here are the most common sizes and their equivalents:
Size 48 = 15.3 mm diameter — Size 50 = 15.9 mm diameter — Size 52 = 16.6 mm diameter — Size 54 = 17.2 mm diameter (standard women's size) — Size 56 = 17.8 mm diameter — Size 58 = 18.5 mm diameter — Size 60 = 19.1 mm diameter — Size 62 = 19.7 mm diameter (standard men's size).
If you know the inner diameter of an existing ring, multiply it by 3.14 to get the circumference and find the corresponding size in this chart.
Personalized ring: choosing your size before ordering
At Mon Cadeau Unique, we offer personalized rings with names, initials, engraved dates, or birthstones. To ensure this piece of jewelry is perfect upon arrival, choosing the right size is essential — an engraved ring cannot be resized without remaking the entire piece. Take the time to measure before ordering, using one of the methods in this guide.
If in doubt, our customer service team is available 6 days a week to help you choose the right size before you personalize your jewelry. Discover our collection of personalized rings and our tips for cleaning your stainless steel rings without damaging them.
FAQ — Frequently asked questions about ring sizes
How do you measure your finger size for a ring?
The simplest method is to wrap a string or strip of paper around the finger at the knuckle, mark where it crosses, and measure this length in millimeters. This figure corresponds to your finger circumference, which is your direct ring size in France. You can also measure the inner diameter of an existing ring worn on the same finger.
What is the standard ring size for a woman?
The standard ring size for a woman is generally size 54, which corresponds to a circumference of 54 mm and an inner diameter of approximately 17.2 mm. It is the most common size for an adult woman's ring finger. For a man, the standard size is usually around 62-64.
What should I do if I'm hesitating between two ring sizes?
When in doubt between two consecutive sizes, always choose the larger one. A slightly loose ring is more comfortable to wear than one that is too tight, especially in summer when fingers swell. It is also important to measure at the most appropriate time: at the end of the day and at room temperature, never when your fingers are cold or swollen after exercise.
How do I choose a ring size for a gift without the person knowing?
The most discreet method is to temporarily borrow a ring that the person already wears on the target finger and measure its inner diameter. You can also carefully observe the rings they wear daily to infer their approximate size. As a last resort, size 54 is a safe bet for an average-sized adult woman.
Can an engraved personalized ring be resized?
No, an engraved ring generally cannot be resized without damaging or erasing the engraving. That is why it is important to measure correctly before ordering a personalized ring. If in doubt, contact our customer service before confirming your order — we will help you choose the most suitable size.
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