Ring Size Guide

At From Planet Earth, we want to ensure your new piece fits perfectly as it was made just for you. Because I make each piece from scratch according to the size you choose, I cannot offer refunds for incorrect sizing. Whether you’re buying for yourself or a loved one, choosing the correct size is key to making your jewellery experience seamless and enjoyable - if you do run into trouble with sizing, please get in touch with me and I will help you find a solution.

I offer ring sizers on my website - so you can get one here.

How to Measure Your Ring Size

Option 1: Measure a ring

Another way to find out your ring size is to measure the inner diameter of one of your rings using a ruler, then compare it to the size chart below. Each mm counts and remember that each finger is different, so measure a ring that fits the finger you want your new ring to go on. 

You can also go to the nearest jeweller and they will measure your size for free.

Option 2: Measure Your Finger

If you don't have a ring sizer, you can easily measure your finger at home with a simple tool—a strip of paper, string, or a tape measure. Here’s how to do it:

  1. Get a String or Paper Strip: Use a piece of string, paper, or a soft tape measure that won’t stretch.
  2. Wrap It Around Your Finger: Wrap the string or paper snugly around the base of your finger where the ring will sit. Be sure it’s not too tight, but firm enough that it won’t slip off.
  3. Mark the Point of Overlap: Once you’ve wrapped the string or paper around, mark where the ends meet.
  4. Measure the Length: Lay the string or paper flat and measure the length with a ruler in millimetres.
  5. Use the Ring Size Chart: Compare your measurement with the chart below to find your ring size.

    Ring Size Conversion Chart

    Inside Diameter (mm) Inside Diameter (inches) Inside Circumference (mm) Inside Circumference (inches) Australia & UK US & Canada
    14.36 0.565 45.11 1.77 G 3 3/8
    14.45 0.569 45.40 1.79 G 1/4 3 1/2
    14.56 0.573 45.74 1.80 G 1/2 3 5/8
    14.65 0.577 46.02 1.81 H 3 3/4
    14.86 0.585 46.68 1.84 H 1/2 4
    15.04 0.592 47.25 1.86 I 4 1/4
    15.27 0.601 47.97 1.89 I 1/2 4 1/2
    15.40 0.606 48.38 1.90 J 4 5/8
    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
    15.80 0.622 49.64 1.95 K 5 1/8
    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
    16.10 0.634 50.58 1.99 L 5 1/2
    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
    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
    17.13 0.674 53.82 2.12 N 1/2 6 3/4
    17.35 0.683 54.51 2.15 O 7
    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
    17.97 0.707 56.45 2.22 P 1/2 7 3/4
    18.19 0.716 57.15 2.25 Q 8
    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
    18.61 0.733 58.47 2.30 R 8 5/8
    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
    19.10 0.752 60.00 2.36 S 9 1/8
    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
    19.51 0.768 61.29 2.41 T 9 5/8
    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
    20.02 0.788 62.89 2.48 U 10 1/4
    20.20 0.797 63.46 2.50 U 1/2 10 1/2
    20.32 0.800 63.84 2.51 V 10 5/8
    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
    20.76 0.817 65.22 2.57 W 11 1/8
    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
    21.18 0.834 66.54 2.62 X 11 5/8
    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
    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
    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
    22.60 0.890 71.00 2.80 Z + 1.5 13 1/2