Carat to mm conversion chart

BRILLIANT CUT PRINCESS CUT MARQUISE CUT OVAL CUT PEAR CUT EMERALD CUT
0.06-0.08cts = 2.5mm 0.06-0.08cts = 2.1-2.2mm 0.07ct = 4X2mm 0.15-0.18ct = 4X3mm 0.15-0.18ct = 4.5X3mm 0.25ct = 4X3mm
0.10-0.12cts = 3mm 0.10-0.12cts = 2.5-2.7mm 0.15ct = 5X2mm 0.25ct = 5X3mm 0.25ct = 5X3.5mm 0.35ct = 5X3mm
0.16-0.18cts = 3.5mm 0.16-0.18cts = 3mm 0.20ct = 5X3mm 0.40ct = 5X4mm 0.35ct = 5.75X4mm 0.40ct = 5X3.5mm
0.20-0.22cts = 3.8mm 0.20-0.22cts = 3.2-3.3mm 0.25ct = 6X3mm 0.50ct = 6X4.5mm 0.40ct = 6X4mm 0.50ct = 5X4mm
0.24-0.26cts = 4mm 0.24-0.26cts = 3.4-3.5mm 0.35ct = 6.5X3.5mm 0.65ct = 6.5X4.5mm 0.50ct = 6.5X4.5mm 0.60ct = 6X3mm
0.27-0.29cts = 4.2mm 0.27-0.29cts = 3.5mm 0.35ct = 7X3mm 0.75ct = 7X5mm 0.75ct = 7X5mm 0.70ct = 6X4mm
0.30-0.35cts = 4.5mm 0.30-0.35cts = 3.8-3.9mm 0.40ct = 6.5X4mm 1.00ct = 7.5X5.5mm 1.00ct = 8X5mm 0.80ct = 6.5X4.5mm
0.36-0.38cts = 4.6mm 0.36-0.38cts = 3.8-3.9mm 0.50ct = 7X4.5mm 1.25ct = 8X6mm 1.50ct = 9X6mm 0.95ct = 7X4mm
0.39-0.43cts = 4.7-4.8mm 0.39-0.43cts = 3.9-4.1mm 0.70ct = 8X5mm 1.50ct = 8.5X6.5mm   1.00ct = 7X5mm
0.44-0.47cts = 4.8-4.9mm 0.44-0.47cts = 4.1-4.3mm 0.70ct = 9X4mm 1.75ct = 9X6mm   1.25ct = 7.5X5.5mm
 0.48-0.52cts = 5mm  0.48-0.52cts = 4.3-4.5mm  0.75ct = 9X4.5mm  2.00ct = 9X6mm    1.50ct = 8X5mm
 0.53-0.59ctsct = 5.2mm  0.53-0.59ctsct = 4.6mm 0.80ct = 9X5mm       2.00ct = 8.5X6.5mm
 0.60-0.62cts = 5.3-5.4mm  0.60-0.62cts = 4.7mm  1.00ct = 9X6mm      2.25ct = 9X6mm
 0.63-0.68ctsct = 5.5-5.6mm  0.63-0.68ctsct = 4.8mm        2.50ct = 9X7mm
 0.69-0.74cts = 5.6-5.8mm  0.69-0.74cts = 4.8-4.9mm        
 0.75-0.80cts = 5.9-6mm  0.75-0.80cts = 4.9-5mm        
 0.90-0.92cts = 6.2-6.3mm  0.90-0.92cts = 5.1-5.2mm        
 0.93cts-0.99cts = 6.3-6.4mm  0.93cts-0.99cts = 5.2-5.3mm        
1.0cts-1.05cts = 6.4-6.5mm 1.0cts-1.05cts = 5.3-5.5mm        
Approx 1.1cts = 6.6mm Approx 1.1cts = 5.8mm        
Approx 1.25cts = 6.8-6.9mm Approx 1.25cts = 6mm        
Approx 1.3cts = 7mm Approx 1.3cts = 6.1mm        
Approx 1.4cts = 7.2-7.3mm Approx 1.4cts = 6.2mm        
Approx 1.5cts = 7.5mm Approx 1.5cts = 6.4mm        
Approx 1.75cts = 7.7-7.8mm Approx 1.75cts = 6.6-6.8mm        
Approx 2cts = 8-8.2mm Approx 2cts = 7mm