Oval-cut Cubic Zirconia Size Chart
Carat to mm size chart for oval-cut Cubic Zirconia, from 0.25ct to 40ct (at an L/W ratio of 1.5). 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 (Oval Cut)
0.25ct
4.31×2.87 mm
4.31×2.87 mm
0.5ct
5.43×3.62 mm
5.43×3.62 mm
0.75ct
6.21×4.14 mm
6.21×4.14 mm
1ct
6.84×4.56 mm
6.84×4.56 mm
1.25ct
7.37×4.91 mm
7.37×4.91 mm
1.5ct
7.82×5.21 mm
7.82×5.21 mm
1.75ct
8.24×5.49 mm
8.24×5.49 mm
2ct
8.61×5.74 mm
8.61×5.74 mm
2.5ct
9.27×6.18 mm
9.27×6.18 mm
3ct
9.86×6.57 mm
9.86×6.57 mm
3.5ct
10.38×6.92 mm
10.38×6.92 mm
4ct
10.85×7.23 mm
10.85×7.23 mm
4.5ct
11.28×7.52 mm
11.28×7.52 mm
5ct
11.69×7.79 mm
11.69×7.79 mm
5.5ct
12.06×8.04 mm
12.06×8.04 mm
6ct
12.42×8.28 mm
12.42×8.28 mm
6.5ct
12.75×8.5 mm
12.75×8.5 mm
7ct
13.07×8.71 mm
13.07×8.71 mm
7.5ct
13.38×8.92 mm
13.38×8.92 mm
8ct
13.67×9.11 mm
13.67×9.11 mm
8.5ct
13.95×9.3 mm
13.95×9.3 mm
9ct
14.22×9.48 mm
14.22×9.48 mm
9.5ct
14.48×9.65 mm
14.48×9.65 mm
10ct
14.72×9.81 mm
14.72×9.81 mm
11ct
15.2×10.13 mm
15.2×10.13 mm
12ct
15.65×10.43 mm
15.65×10.43 mm
13ct
16.07×10.71 mm
16.07×10.71 mm
14ct
16.47×10.98 mm
16.47×10.98 mm
15ct
16.86×11.24 mm
16.86×11.24 mm
16ct
17.22×11.48 mm
17.22×11.48 mm
17ct
17.57×11.71 mm
17.57×11.71 mm
18ct
17.91×11.94 mm
17.91×11.94 mm
19ct
18.24×12.16 mm
18.24×12.16 mm
20ct
18.56×12.37 mm
18.56×12.37 mm
22ct
19.16×12.77 mm
19.16×12.77 mm
24ct
19.71×13.14 mm
19.71×13.14 mm
26ct
20.25×13.5 mm
20.25×13.5 mm
28ct
20.75×13.83 mm
20.75×13.83 mm
30ct
21.24×14.16 mm
21.24×14.16 mm
33ct
21.92×14.61 mm
21.92×14.61 mm
36ct
22.56×15.04 mm
22.56×15.04 mm
40ct
23.37×15.58 mm
23.37×15.58 mm
Length-to-width ratio: 1.5, 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 oval-cut Cubic Zirconia carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.31×2.87 mm |
| 0.5 ct | 5.43×3.62 mm |
| 0.75 ct | 6.21×4.14 mm |
| 1 ct | 6.84×4.56 mm |
| 1.25 ct | 7.37×4.91 mm |
| 1.5 ct | 7.82×5.21 mm |
| 1.75 ct | 8.24×5.49 mm |
| 2 ct | 8.61×5.74 mm |
| 2.5 ct | 9.27×6.18 mm |
| 3 ct | 9.86×6.57 mm |
| 3.5 ct | 10.38×6.92 mm |
| 4 ct | 10.85×7.23 mm |
| 4.5 ct | 11.28×7.52 mm |
| 5 ct | 11.69×7.79 mm |
| 5.5 ct | 12.06×8.04 mm |
| 6 ct | 12.42×8.28 mm |
| 6.5 ct | 12.75×8.5 mm |
| 7 ct | 13.07×8.71 mm |
| 7.5 ct | 13.38×8.92 mm |
| 8 ct | 13.67×9.11 mm |
| 8.5 ct | 13.95×9.3 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 14.22×9.48 mm |
| 9.5 ct | 14.48×9.65 mm |
| 10 ct | 14.72×9.81 mm |
| 11 ct | 15.2×10.13 mm |
| 12 ct | 15.65×10.43 mm |
| 13 ct | 16.07×10.71 mm |
| 14 ct | 16.47×10.98 mm |
| 15 ct | 16.86×11.24 mm |
| 16 ct | 17.22×11.48 mm |
| 17 ct | 17.57×11.71 mm |
| 18 ct | 17.91×11.94 mm |
| 19 ct | 18.24×12.16 mm |
| 20 ct | 18.56×12.37 mm |
| 22 ct | 19.16×12.77 mm |
| 24 ct | 19.71×13.14 mm |
| 26 ct | 20.25×13.5 mm |
| 28 ct | 20.75×13.83 mm |
| 30 ct | 21.24×14.16 mm |
| 33 ct | 21.92×14.61 mm |
| 36 ct | 22.56×15.04 mm |
| 40 ct | 23.37×15.58 mm |