Find Your Ring Size

How to Find Out Her Ring Size without Her Knowing

Be Subtle

If you are absolutely set on a surprise proposal but you still want to find out her ring size directly from the source, ask your girlfriend in a very subtle, smooth way. You can pretend, for example, that you are going to buy a ring for your mom/sister/aunt/niece etc. Make sure that this pretend recipient is someone whose hands are similar in size to your girlfriend. Casually ask what her ring size is for reference. If you really want to beef up the ruse, purchase an inexpensive ring and show it to her. Have her try it on and everything! Maybe afterward you can actually give that ring to your mom/sister/aunt/niece to appease your guilty conscience!

Ask Her Friends

A great way to find out her ring size is to ask one of her friends. Friends occasionally have this insight! And, if the friend doesn’t know right away, she can be the one to ask (nonchalantly). Even better, ask the friend to take your girlfriend engagement ring shopping “for fun.” Have her get professionally sized and ask her friend to report back to you. It’s best to choose a friend who might have once had acting aspirations!

Borrow One of her Rings

Another method is to snag one of her old rings for a day. You need to be careful with this method because it might backfire on you! Make sure that you grab a ring that she wears on a similarly sized finger, the ring finger of her right hand being the optimal choice (unless, of course, she wears a ring on her left ring finger, which is less likely). Even if you bring in a thumb ring we can usually come up with a close approximation of what size her ring finger will be. If you choose this option, make sure that you choose a ring that isn’t overly important to her and wouldn’t cause any emotional distress if she notices it missing!

Ask Your Partner!

There are some people in this world who like to do things the hard way, and then there are those who are very straightforward. If you and your partner have been discussing marriage for quite some time, ask her outright what her ring size is! Don’t worry though— you can still have the element of surprise. After all, she doesn’t know when you’re going to ask her, or how! If she doesn’t know her ring size, she can find it using our printable ring sizing guide.

Keep in Mind:

The most accurate way to confirm ring size is to have it physically measured by a jeweler. Using one or several of the methods above will result in a very good approximation.

Please note that for custom designed rings, we highly recommend visiting a local jeweler or tracing the circumference of one of her current rings on a paper. Err on a larger size so that it will be guaranteed to slip over her finger when you propose.

Interesting Ring Size Facts:

Our dominant hands tend to be slightly bigger (so make sure you are measuring for her left!)
The most common women’s ring size is 6 to 6.5.
Wider rings have a tighter fit than thinner bands, so if you borrow a ring for us to measure, try to make sure that it is the same width as the ring you plan on purchasing.

Inside Diameter Inside Circumference Sizes
MM Inches MM Inches British & Australian US & Canada French & Russian German Japanese Swiss
9.91 0.390 31.13 1.22 – 0000 – – – –
10.72 0.442 33.68 1.39 – 00 – – – –
11.53 0.454 36.22 1.43 – 0 – – – –
11.95 0.474 37.54 1.49 A 1/2 – – – –
12.18 0.482 38.26 1.51 A 1/2 3/4 – – – –
12.37 0.487 38.86 1.53 B 1 – – 1 –
12.60 0.496 39.58 1.56 B 1/2 1 1/4 – – – –
12.78 0.503 40.15 1.58 C 1 1/2 – – – –
13.00 0.512 40.84 1.61 C 1/2 1 3/4 – – – –
13.21 0.520 41.50 1.63 D 2 41 1/2 13 1/2 2 1 1/2
13.41 0.528 42.13 1.66 D 1/2 2 1/4 – – – –
13.61 0.536 42.76 1.68 E 2 1/2 42 3/4 13 3/4 3 2 3/4
13.83 0.544 43.45 1.71 E 1/2 2 3/4 – – – –
14.05 0.553 44.14 1.74 F 3 44 14 4 4
14.15 0.557 44.45 1.75 F 1/2 3 1/8 – – – –
14.25 0.561 44.77 1.76 F 3/4 3 1/4 – – – –
14.36 0.565 45.11 1.77 G 3 3/8 45 1/4 – 5 5 1/4
14.45 0.569 45.40 1.79 G 1/4 3 1/2 – 14 1/2 – –
14.56 0.573 45.74 1.80 G 1/2 3 5/8 – – 6 –
14.65 0.577 46.02 1.81 H 3 3/4 46 1/2 – – 6 1/2
14.86 0.585 46.68 1.84 H 1/2 4 – 15 7 –
15.04 0.592 47.25 1.86 I 4 1/4 47 3/4 – – 7 3/4
15.27 0.601 47.97 1.89 I 1/2 4 1/2 – 15 1/4 8 –
15.40 0.606 48.38 1.90 J 4 5/8 49 15 1/2 – 9
15.53 0.611 48.79 1.92 J 1/4 4 3/4 – – – –
15.70 0.618 49.32 1.94 J 1/2 5 – 15 3/4 9 –
15.80 0.622 49.64 1.95 K 5 1/8 50 – – 10
15.90 0.626 49.95 1.97 K 1/4 5 1/4 – – – –
16.00 0.630 50.27 1.98 K 1/2 5 3/8 – – 10 –
16.10 0.634 50.58 1.99 L 5 1/2 51 3/4 16 – 11 3/4
16.30 0.642 51.21 2.02 L 1/4 5 3/4 – – – –
16.41 0.646 51.55 2.03 L 1/2 5 7/8 – – – –
16.51 0.650 51.87 2.04 M 6 52 3/4 16 1/2 12 12 3/4
16.71 0.658 52.50 2.07 M 1/2 6 1/4 – – – –
16.92 0.666 53.16 2.09 N 6 1/2 54 17 13 14
17.13 0.674 53.82 2.12 N 1/2 6 3/4 – – – –
17.35 0.683 54.51 2.15 O 7 55 1/4 17 1/4 14 15 1/4
17.45 0.687 54.82 2.16 O 1/2 7 1/4 – – – –
17.75 0.699 55.76 2.20 P 7 1/2 56 1/2 17 3/4 15 16 1/2
17.97 0.707 56.45 2.22 P 1/2 7 3/4 – – – –
18.19 0.716 57.15 2.25 Q 8 57 3/4 18 16 17 3/4
18.35 0.722 57.65 2.27 Q 1/2 8 1/4 – – – –
18.53 0.729 58.21 2.29 Q 3/4 8 1/2 – 18 1/2 17 –
18.61 0.733 58.47 2.30 R 8 5/8 59 – – 19
18.69 0.736 58.72 2.31 R 1/4 8 3/4 – – – –
18.80 0.740 59.06 2.32 R 1/2 8 7/8 – – – –
18.89 0.748 59.34 2.35 R 3/4 9 – 19 18 –
19.10 0.752 60.00 2.36 S 9 1/8 60 1/4 – – 20 1/4
19.22 0.757 60.38 2.38 S 1/4 9 1/4 – – – –
19.31 0.760 60.66 2.39 S 1/2 9 3/8 – – – –
19.41 0.764 60.98 2.40 S 3/4 9 1/2 – 19 1/2 19 –
19.51 0.768 61.29 2.41 T 9 5/8 61 1/2 – – 21 1/2
19.62 0.772 61.64 2.43 T 1/4 9 3/4 – – – –
19.84 0.781 62.33 2.45 T 1/2 10 – 20 20 –
20.02 0.788 62.89 2.48 U 10 1/4 62 3/4 – 21 22 3/4
20.20 0.797 63.46 2.50 U 1/2 10 1/2 – 20 1/4 22 –
20.32 0.800 63.84 2.51 V 10 5/8 63 – – 23 3/4
20.44 0.805 64.21 2.53 V 1/4 10 3/4 – – – –
20.68 0.814 64.97 2.56 V 1/2 11 – 20 3/4 23 –
20.76 0.817 65.22 2.57 W 11 1/8 65 – – 25
20.85 0.821 65.50 2.58 W 1/4 11 1/4 – – – –
20.94 0.824 65.78 2.59 W 1/2 11 3/8 – – – –
21.08 0.830 66.22 2.61 W 3/4 11 1/2 – 21 24 –
21.18 0.834 66.54 2.62 X 11 5/8 66 1/4 – – 26 1/4
21.24 0.836 66.73 2.63 X 1/4 11 3/4 – – – –
21.30 0.839 66.92 2.64 X 1/2 11 7/8 – – – –
21.49 0.846 67.51 2.66 Y 12 67 1/2 21 1/4 25 27 1/2
21.69 0.854 68.14 2.68 Y 1/2 12 1/4 – – – –
21.89 0.862 68.77 2.71 Z 12 1/2 68 3/4 21 3/4 26 28 3/4
22.10 0.870 69.43 2.73 Z +1/2 12 3/4 – – – –
22.33 0.879 70.15 2.76 Z+1 13 – 22 27 –
22.60 0.890 71.00 2.80 Z+1.5 13.5 – – – –
22.69 0.893 71.28 2.81 Z+2 – – – – –
22.92 0.902 72.00 2.83 Z+2.5 – – – – –
23.06 0.908 72.45 2.85 Z+3 – – – – –
23.24 0.915 73.01 2.87 Z+3.5 – – – – –
23.47 0.924 73.73 2.90 Z+4 – – – – –
23.55 0.927 73.98 2.91 Z+4.5 – – – – –
23.87 0.940 74.99 2.95 Z+5 – – – – –
24.27 0.956 76.25 3.00 Z+6 – – – – –