How do I measure fingers for ring sizes?

Buying a ring is a big investment, so you want to make sure you get one that is the perfect size. The most accurate ring measurements are taken by jewellers, although you can get a good idea of your ring size by measuring your own fingers. Take the measurements in the afternoon and when your hands are at room temperature. Your finger size fluctuates depending on the temperature and time of day.

Use a piece of string or a piece of paper no more than 1/2 inch wide.

Wrap the string or paper around the finger that you wish to measure. Use the pen to mark where the string or paper overlaps. Mark both ends of the string or paper.

Measure the length between the two marks.

Use the following table to determine your ring size:

1.740 inches = ring size 3

1.790 inches = ring size 3.5

1.840 inches = ring size 4

1.890 inches = ring size 4.5

1.941 inches = ring size 5

1.991 inches = ring size 5.5

2.041 inches = ring size 6

2.091 inches = ring size 6.5

2.141 inches = ring size 7

2.192 inches = ring size 7.5

2.242 inches = ring size 8

2.292 inches = ring size 8.5

2.342 inches = ring size 9

2.393 inches = ring size 9.5

2.443 inches = ring size 10

2.493 inches = ring size 10.5

2.543 inches = ring size 11

2.594 inches = ring size 11.5

2.644 inches = ring size 12

2.694 inches = ring size 12.5

2.744 inches = ring size 13


If you already have a ring that fits perfectly, use the chart in the resources section to find your ring size. The circle on the chart equals the inside diameter of the ring.


Measuring your finger when it is very hot or very cold will render an inaccurate reading.

Things You'll Need

  • Piece of string or paper
  • Pen
  • Ruler
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About the Author

Nicole Fotheringham has been a writer since 1997. She was born in South Africa and began as a reporter for the "Natal Mercury" and "Cape Argus" newspapers. Fotheringham has a master's degree in English literature from the University of KwaZulu-Natal.