Ring Guide

Finding the perfect fit is essential for comfort and beauty. A ring that fits well should slide easily onto your finger, yet resist slipping off.

This guide will help you measure your size accurately before choosing your dream piece.

Diamond Background

How to Measure Your Ring Size at Home

#1 Using a Ring You Already Own

  • Select a ring that fits the intended finger perfectly.

  • Measure the inner diameter in millimetres using a ruler or calliper.

  • Match the measurement to our size chart below.

#2 Using a Measuring Stripe

  • Cut a strip of paper or ribbon.

  • Wrap it snugly around the base of your finger.

  • Mark the point where the ends meet and measure the length in millimetres.

  • Refer to the circumference  column in our size chart.

Size Chart (Singapore Standard)

SizeDiameter (mm)Circumference (mm)
915.649
1015.950
1116.251
1216.652.2
1316.953.1
1417.254
1517.555
1617.856
1718.157
1818.458
1918.859
2019.160

Tips for Accurate Sizing

  • Measure your finger at the end of the day, when it’s at its largest.

  • Avoid measuring when your fingers are cold, as they may be smaller.

  • If you are between sizes, we recommend choosing the larger size for comfort.

Professional Ring Sizing

For the most accurate fit, we recommend visiting On Cheong for a complimentary professional sizing.
Our team will ensure your ring is perfectly tailored to your finger, whether for daily wear or a special occasion.