Or read how it works, see the rings we've made, find her size, or browse our guides.
You're zoomed in. Pinch back out to measure: the outline is only true size at normal zoom.
Ring sizer
With a ring she already wears, or a length of thread. About two minutes.
Step one of three
Every card is the same size, so it shows us your screen's true scale.
Keep the page at normal zoom.
Step two of three
Borrowing a ring is more accurate. Use the thread method only if there is nothing to take.
Step three of three
Adjust until the line disappears just inside the band. Match the inside edge of the metal, not the outside, and look straight down.
16.51 mm inside diameter
Check which finger she wears it on. Her right hand usually runs half a size larger than her left.
Step three of three
Wrap paper or non-stretch thread around the base of her ring finger, snug but not tight, and mark the overlap. Lay it flat and measure the length in millimeters.
It has to pass over the knuckle as well as sit at the base. Measure at room temperature, in the middle of the day, and do it twice.
Enter a length between 38 and 70 mm.
Her ring size
6
16.51 mm inside diameter
If she falls between two sizes, take the larger one. A ring slightly too big still goes on her finger. A ring slightly too small does not, and that happens in the exact moment you have been planning for.
Send us what you have, even if it is only a photograph of a borrowed ring, and we will tell you honestly how confident we are before anything is made.
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