Depending on your answer to the previous question, this one could be a challenge. Here are some suggestions for how to discreetly find out your fiancée’s ring size, ranked from least to most risky.
- Look at her rings
This is by far the easiest way to get the job done. Simply take out one of your fiancée’s rings while she’s out – preferably one she wears a lot – and measure its diameter with a ruler.
Alternatively, you can trace its shape (inside and outside) onto a piece of paper – or if she won’t notice it’s gone, take the ring to a jeweler to get it sized.
- Try one of her rings on yourself and compare
If you’re short on time or don’t want to leave any evidence lying around, try on one of her rings yourself. Make a mental note of how well it fits you and on which finger.
- Ask her friends to help you
A close friend of your fiancées will be able to ask a question like this without automatically arousing suspicion, so choose your confidant wisely! Not everyone can keep a straight face in a situation like this, and the worst-case scenario could see the surprise blown entirely.
If you get her measurements on your own, it’s easy to convert them into a ring size using the following table:
| Ring diameter | Ring size (US) |
| 15.6mm | 5 |
| 16.0mm | 5 ½ |
| 16.5mm | 6 |
| 16.9mm | 6 ½ |
| 17.3mm | 7 |
| 17.7mm | 7 ½ |
