Cushion-cut Cubic Zirconia Size Chart
Carat to mm size chart for cushion-cut Cubic Zirconia, from 0.25ct to 40ct. The chart is interactive, meaning you can click on any stone to view it directly in the size simulator.
Gem sizes are shown in actual, real-world size, provided your device screen size is in diagonal. If this is not correct, change it here:
Gem sizes are shown in actual, real-world size, provided your device screen size is in diagonal. If this is not correct, change it here:
Actual size is set for screen
Gemstone:
Shape:
Cubic Zirconia Size Chart (Cushion Cut)
0.25ct
3.11×3.11 mm
3.11×3.11 mm
0.5ct
3.92×3.92 mm
3.92×3.92 mm
0.75ct
4.48×4.48 mm
4.48×4.48 mm
1ct
4.93×4.93 mm
4.93×4.93 mm
1.25ct
5.31×5.31 mm
5.31×5.31 mm
1.5ct
5.65×5.65 mm
5.65×5.65 mm
1.75ct
5.95×5.95 mm
5.95×5.95 mm
2ct
6.22×6.22 mm
6.22×6.22 mm
2.5ct
6.7×6.7 mm
6.7×6.7 mm
3ct
7.12×7.12 mm
7.12×7.12 mm
3.5ct
7.49×7.49 mm
7.49×7.49 mm
4ct
7.83×7.83 mm
7.83×7.83 mm
4.5ct
8.14×8.14 mm
8.14×8.14 mm
5ct
8.44×8.44 mm
8.44×8.44 mm
5.5ct
8.71×8.71 mm
8.71×8.71 mm
6ct
8.96×8.96 mm
8.96×8.96 mm
6.5ct
9.21×9.21 mm
9.21×9.21 mm
7ct
9.44×9.44 mm
9.44×9.44 mm
7.5ct
9.66×9.66 mm
9.66×9.66 mm
8ct
9.87×9.87 mm
9.87×9.87 mm
8.5ct
10.07×10.07 mm
10.07×10.07 mm
9ct
10.26×10.26 mm
10.26×10.26 mm
9.5ct
10.45×10.45 mm
10.45×10.45 mm
10ct
10.63×10.63 mm
10.63×10.63 mm
11ct
10.97×10.97 mm
10.97×10.97 mm
12ct
11.29×11.29 mm
11.29×11.29 mm
13ct
11.6×11.6 mm
11.6×11.6 mm
14ct
11.89×11.89 mm
11.89×11.89 mm
15ct
12.17×12.17 mm
12.17×12.17 mm
16ct
12.43×12.43 mm
12.43×12.43 mm
17ct
12.69×12.69 mm
12.69×12.69 mm
18ct
12.93×12.93 mm
12.93×12.93 mm
19ct
13.16×13.16 mm
13.16×13.16 mm
20ct
13.39×13.39 mm
13.39×13.39 mm
22ct
13.82×13.82 mm
13.82×13.82 mm
24ct
14.23×14.23 mm
14.23×14.23 mm
26ct
14.62×14.62 mm
14.62×14.62 mm
28ct
14.98×14.98 mm
14.98×14.98 mm
30ct
15.33×15.33 mm
15.33×15.33 mm
33ct
15.82×15.82 mm
15.82×15.82 mm
36ct
16.29×16.29 mm
16.29×16.29 mm
40ct
16.87×16.87 mm
16.87×16.87 mm
Length-to-width ratio: 1, Color:
Download Chart
Note: If you want to cut out the shapes and try them on your finger, print out the PDF chart. The image (png) chart will not print at actual size.
Carat-to-MM Conversion Table
Use this conversion table to quickly convert cushion-cut Cubic Zirconia carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 3.11×3.11 mm |
| 0.5 ct | 3.92×3.92 mm |
| 0.75 ct | 4.48×4.48 mm |
| 1 ct | 4.93×4.93 mm |
| 1.25 ct | 5.31×5.31 mm |
| 1.5 ct | 5.65×5.65 mm |
| 1.75 ct | 5.95×5.95 mm |
| 2 ct | 6.22×6.22 mm |
| 2.5 ct | 6.7×6.7 mm |
| 3 ct | 7.12×7.12 mm |
| 3.5 ct | 7.49×7.49 mm |
| 4 ct | 7.83×7.83 mm |
| 4.5 ct | 8.14×8.14 mm |
| 5 ct | 8.44×8.44 mm |
| 5.5 ct | 8.71×8.71 mm |
| 6 ct | 8.96×8.96 mm |
| 6.5 ct | 9.21×9.21 mm |
| 7 ct | 9.44×9.44 mm |
| 7.5 ct | 9.66×9.66 mm |
| 8 ct | 9.87×9.87 mm |
| 8.5 ct | 10.07×10.07 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 10.26×10.26 mm |
| 9.5 ct | 10.45×10.45 mm |
| 10 ct | 10.63×10.63 mm |
| 11 ct | 10.97×10.97 mm |
| 12 ct | 11.29×11.29 mm |
| 13 ct | 11.6×11.6 mm |
| 14 ct | 11.89×11.89 mm |
| 15 ct | 12.17×12.17 mm |
| 16 ct | 12.43×12.43 mm |
| 17 ct | 12.69×12.69 mm |
| 18 ct | 12.93×12.93 mm |
| 19 ct | 13.16×13.16 mm |
| 20 ct | 13.39×13.39 mm |
| 22 ct | 13.82×13.82 mm |
| 24 ct | 14.23×14.23 mm |
| 26 ct | 14.62×14.62 mm |
| 28 ct | 14.98×14.98 mm |
| 30 ct | 15.33×15.33 mm |
| 33 ct | 15.82×15.82 mm |
| 36 ct | 16.29×16.29 mm |
| 40 ct | 16.87×16.87 mm |