First things first: are you sure you're measuring the right finger?

The engagement ring is traditionally worn on the left ring finger

Before looking for the ideal size, you first need to know the correct finger. In France, the engagement ring is traditionally worn on the left ring finger, and then accompanied by the wedding band after marriage.

For this reason, all your measurements should focus on this specific finger. A mistake in the finger can quickly lead to several size differences.

Do you want to verify the correspondence between a diameter, circumference, or ring size? Consult the size guide before starting your measurements.

Beware of rings worn on other fingers

Many people wear rings on their middle finger, index finger, or even thumb. However, these fingers are often wider than the ring finger.

Using one of these rings as a reference risks completely skewing your estimate.

Example:
Thomas had discreetly measured a ring his partner wore daily. Convinced he had found the right size, he ordered her engagement ring. On the day of the proposal, he discovered that this ring was worn on her middle finger: the new ring was far too large.

Why a consistent estimate is often sufficient

Contrary to popular belief, it's not always necessary to know a perfectly exact size. A close estimate is often enough to avoid most errors.

The primary goal is to obtain a reliable basis for choosing the engagement ring without compromising the surprise.

Discrete methods that actually work

Discreetly borrow a ring worn on the ring finger

This is probably the most reliable method. If your partner regularly removes a ring before sleeping or showering, take advantage of it to measure it or have a jeweler check it.

A few minutes are usually enough to get a very precise estimate.

If you have access to an existing ring, our size guide will allow you to easily convert its dimensions into finger size.

Trace the inside of a ring

Can't leave the house with her ring? A simple piece of paper and a very fine pencil can be enough.

Place the ring flat and carefully trace its inner contour with a mechanical pencil or a Rotring-type pencil. This sketch can then be used as a reference.

Use the string technique while they're sleeping

More daring, this method can nevertheless work with people who are deep sleepers.

The idea is to gently wrap a string or flexible ribbon around the ring finger, mark the point where it closes, and then measure the resulting length to determine the finger's circumference.

Example:
A few weeks before his proposal, Hugo didn't have any rings that could serve as a model. He took advantage of a particularly quiet night to discreetly measure his partner's finger with a flexible ribbon. An operation performed in less than a minute that allowed him to get a very close estimate to reality.

Once you have your measurement, use our size guide to check its correspondence.

Involve their entourage: accomplices are often the best allies

Ask for help from a best friend or sister

Some information is much easier to obtain when it comes from a trusted person.

A best friend, sister, or cousin can naturally steer the conversation towards jewelry and get the answer without arousing any suspicion.

Did you get a size? Confirm it quickly.

Create a discussion around jewelry

A wedding, a birthday, or even a simple stroll past a jewelry store can become ideal opportunities to bring up the subject.

Asking what style of ring she prefers or what piece of jewelry she would wear daily can naturally lead to talking about sizes and trying things on.

Pretend to buy for someone else

This technique works particularly well.

Example:
Julie received a call from her best friend asking for advice on choosing a ring. Over the course of the conversation, they naturally compared their respective sizes. Julie never suspected that this information was intended for her future fiancé.

Still don't know the size? Here's how to limit the risks

The most common ring sizes in France

When all previous methods have failed, statistics can provide a first benchmark.

Women generally wear sizes between 50 and 54.

For men, the most common sizes are between 60 and 62.

When in doubt, choose the larger size

Between two sizes, it's generally better to opt for the larger one.

A slightly too-large ring will often be easier to adjust than a ring impossible to put on on the day of the proposal.

Consider natural finger variations

Temperature, time of day, and physical activity all influence finger size.

Fingers tend to be thinner upon waking and slightly more swollen at the end of the day or during periods of high heat.

Example:
A groom-to-be hesitated between size 52 and 54. As his proposal was planned for mid-summer during the holidays, he chose the larger size. The ring turned out to be perfectly suitable on the big day.

To make the most informed choice possible, consult the size guide or contact me if you would like support with your project.