How to measure your ring size at home (without a ring sizer)?

Updated on: May 19, 2026 | Maison de l'Amour

QUICK SUMMARY:

Don’t know your ring size? Don’t panic. You can easily measure your finger circumference at home using a simple piece of string (or a strip of paper) and a ruler. The length in millimeters will correspond to your size (e.g., 52 mm = size 52). But for absolute comfort, especially in summer when fingers swell, the safest option is still to choose an adjustable stainless steel ring.

1. The Stress of Buying Online

You’re browsing our store, you fall in love with a gold ring, and just as you’re about to add it to your cart... doubt sets in. "Am I a size 50, 52, or 54?"

Buying a classic (closed) ring online can be stressful. If it’s too small, it will feel tight and restrict circulation. If it’s too large, it may slip off and get lost. Fortunately, you don’t need to rush to a jeweler to find out your size.

Woman’s hands measuring her finger circumference with white string and a ruler

A simple piece of string is all you need to determine your exact size.

2. The String Trick (The Simple Method)

Here’s the most reliable way to measure your finger circumference at home in just 3 minutes.

What you’ll need:

A piece of string (or a thin strip of paper), a pen, and a ruler.

The 3 steps:

Wrap the string around the finger you want to wear the ring on. Warning: Don’t pull it too tight! The string must be able to pass over the widest joint of your finger.
Using the pen, make a small mark where the string crosses itself.
Unwind the string and measure the distance between the end and the mark with your ruler, in millimeters.

The result:

It’s very simple: The distance in millimeters = Your French ring size.
If you measure 52 mm, your size is 52. If you measure 54 mm, it’s size 54. If you fall between two sizes (e.g., 53 mm), always choose the next size up (54).

3. The Summer Trap: Why Your Measurements Will Be Inaccurate

Now that you know your size, you’re ready to order. But beware! There’s one crucial detail to consider, especially as the warm season approaches.

Your fingers are not “static.” They swell with heat, humidity, physical exertion, or even in the morning when you wake up. A size 52 ring that fits you perfectly in January might pinch your finger at the beach in the middle of July. Conversely, in winter, the cold constricts your blood vessels and the ring may become too loose.

Close-up of the open back of a gold Maison de l'Amour adjustable ring

4. The Magic Solution: The Adjustable Ring (And Why Ours Doesn’t Break)

To spare you this stress and discomfort, Maison de l'Amour has chosen to offer a vast collection of adjustable (or open) rings.

They offer 3 major advantages:

Absolute comfort: Open it by a millimeter when it’s hot, then tighten it in the evening. It adapts to your body, not the other way around.
Zero guesswork when giving a gift: It’s the perfect gift because you don’t need to investigate to find out your friend’s ring size.
Freedom of style: Wear it on your ring finger on Monday, adjust it to wear on your middle finger on Tuesday, and move it to your thumb for the weekend!

“But couldn’t it break?”
No! Adjustable rings that break in half are generally made of low-quality brass. Our rings are forged from stainless steel. This metal is incredibly sturdy while retaining a “shape memory” that allows it to bend slightly without ever breaking.