Our Pickup Location
Sonalux House, Shop 12, 7th Floor, Moi Avenue, Nairobi
Contact Info
+254 726 518863
info@mercajewelry.co.ke
Customer Care
Find your perfect fit in three simple steps. Measure at home with a strip of paper and a ruler, then match your result to our chart.
You’ll need a thin strip of paper, a pen, and a ruler marked in millimetres.
Wrap a strip of paper around your finger where you’d like the ring to sit. Keep it snug — the same fit you want from the finished ring.
Mark the point where the paper overlaps, then measure that length with a ruler in millimetres (mm). That number is your circumference.
Find your measurement on the size chart below. If you’re between two sizes, we usually recommend going up one size for comfort.
Use the circumference in mm from your paper measurement. Diameter is included for reference if you already own a well-fitting ring.
| US size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 5 | 15.7 | 49 |
| 6 | 16.5 | 52 |
| 7 | 17.3 | 55 |
| 8 | 18.1 | 57 |
| 9 | 19.0 | 59 |
| 10 | 19.8 | 62 |
| 11 | 20.6 | 65 |
| 12 | 21.4 | 67 |
| 13 | 22.2 | 70 |
Tip: if your measurement falls between two sizes, choose the larger size for everyday comfort.
A few details that make sizing more accurate.
Fingers can swell slightly during the day. Evening measurements tend to give a more reliable fit.
Cold weather can make fingers slightly smaller. Measure when your hands feel at a normal temperature.
Wider rings often fit tighter. If you’re choosing a bold band, consider half a size up when possible.
Message us on WhatsApp with your measurement — we’re happy to help you pick the right size before you order.
Browse our collection, or chat with us if you’d like a second opinion on size.