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Carat Weight To Millimeter Conversion Tables
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Asscher Cut
Carat Weight |
MM Size |
0.11 |
3.00 |
0.26 |
3.25 |
0.29 |
3.50 |
0.31 |
3.75 |
0.39 |
4.00 |
0.44 |
4.25 |
0.56 |
4.50 |
0.64 |
4.75 |
0.71 |
5.00 |
0.99 |
5.50 |
1.25 |
6.00 |
1.59 |
6.50 |
1.96 |
7.00 |
2.40 |
7.50 |
2.74 |
7.75 |
3.01 |
8.00 |
3.24 |
8.25 |
3.67 |
8.50 |
4.10 |
8.75 |
4.12 |
9.00 |
| 5.09 |
9.50 |
| 5.36 |
9.75 |
| 5.62 |
10.00 |
| 5.99 |
10.25 |
| 6.39 |
10.50 |
| 6.95 |
10.75 |
| 7.44 |
11.00 |
| 9.44 |
11.50 |
| 9.52 |
12.00 |
| 12.86 |
13.00 |
| 15.15 |
14.00 |
| 24.08 |
16.00 |
| 32.44 |
18.00 |
| 42.66 |
20.00 |
| 58.66 |
22.00 |
Cushion Cut
Carat Weight |
MM Size |
0.010 |
1.25 |
0.015 |
1.50 |
0.020 |
1.75 |
0.03 |
2.00 |
0.04 |
2.25 |
0.05 |
2.50 |
0.08 |
2.75 |
0.11 |
3.00 |
0.14 |
3.25 |
0.17 |
3.50 |
0.21 |
3.75 |
0.25 |
4.00 |
0.28 |
4.25 |
0.36 |
4.50 |
0.44 |
4.75 |
0.46 |
5.00 |
0.56 |
5.25 |
0.66 |
5.50 |
0.76 |
5.75 |
0.84 |
6.00 |
| 0.93 |
6.25 |
| 1.03 |
6.50 |
| 1.24 |
6.75 |
| 1.28 |
7.00 |
| 1.49 |
7.25 |
| 1.67 |
7.50 |
| 1.75 |
7.75 |
| 2.04 |
8.00 |
| 2.11 |
8.25 |
| 2.43 |
8.50 |
| 2.55 |
8.75 |
| 2.75 |
9.00 |
| 3.05 |
9.25 |
| 3.35 |
9.50 |
| 3.61 |
9.75 |
| 3.87 |
10.00 |
| 4.16 |
10.25 |
| 4.41 |
10.50 |
| 4.44 |
10.75 |
| 4.91 |
11.00 |
| 5.49 |
11.25 |
| 5.85 |
11.50 |
| 6.84 |
12.00 |
| 7.26 |
12.25 |
| 7.36 |
12.50 |
| 7.52 |
12.75 |
Emerald Cut
Carat Weight |
MM Size |
0.29 |
5 x 3 |
0.66 |
6 x 4 |
0.88 |
6.5 x 4.5 |
1.06 |
7 x 5 |
1.74 |
8 x 6 |
2.17 |
8.5 x 6.5 |
2.62 |
9 x 7 |
3.21 |
9.5 x 7.5 |
3.79 |
10 x 8 |
4.78 |
12 x 8 |
5.21 |
11 x 9 |
6.38 |
13 x 9 |
6.95 |
12 x 10 |
8.48 |
14 x 10 |
9.13 |
13 x 11 |
11.26 |
14 x 12 |
11.48 |
15 x 11 |
14.22 |
16 x 12 |
19.33 |
18 x 13 |
25.90 |
20 x 15 |
Heart Cut
Carat Weight |
MM Size |
0.25 |
4.00 |
0.34 |
4.50 |
0.44 |
5.00 |
0.61 |
5.50 |
0.74 |
6.00 |
0.83 |
6.25 |
0.93 |
6.50 |
1.13 |
7.00 |
1.59 |
7.50 |
1.71 |
8.00 |
2.41 |
9.00 |
2.90 |
9.50 |
3.16 |
10.00 |
4.41 |
11.00 |
5.66 |
12.00 |
7.88 |
13.00 |
9.38 |
14.00 |
10.79 |
15.00 |
13.27 |
16.00 |
20.88 |
18.00 |
24.71 |
20.00 |
Marquise Cut
Carat Weight |
MM Size |
0.08 |
4 x 2 |
0.14 |
5 x 2.5 |
0.25 |
6 x 3 |
0.31 |
6.5 x 3.5 |
0.35 |
7 x 3.5 |
0.41 |
8 x 3.5 |
0.47 |
8 x 4 |
0.71 |
9 x 4.5 |
0.95 |
10 x 5 |
1.25 |
11 x 5.5 |
1.62 |
12 x 6 |
2.11 |
13 x 6.5 |
2.48 |
14 x 7 |
3.09 |
15 x 7.5 |
3.86 |
16 x 8 |
4.88 |
17 x 8.5 |
5.65 |
18 x 9 |
7.94 |
20 x 10 |
9.58 |
22 x 11 |
21.00 |
30 x 15 |
Oval Cut
Carat Weight |
MM Size |
0.21 |
5 x 3 |
0.32 |
5 x 4 |
0.43 |
6 x 4 |
0.61 |
6 x 5 |
0.76 |
7 x 5 |
0.98 |
7.5 x 5.5 |
1.21 |
8 x 6 |
1.41 |
9 x 6 |
1.86 |
9 x 7 |
2.54 |
10 x 8 |
2.99 |
12 x 8 |
2.88 |
10.5 x 8.5 |
3.85 |
11 x 9 |
5.05 |
12 x 10 |
5.81 |
14 x 10 |
6.05 |
13 x 11 |
8.21 |
14 x 12 |
8.76 |
15 x 12 |
9.32 |
16 x 12 |
12.86 |
18 x 13 |
18.92 |
20 x 15 |
24.02 |
22 x 16 |
Pear Cut
Carat Weight |
MM Size |
0.35 |
5x4 |
0.39 |
6 x 4 |
0.57 |
6.50 x 4.50 |
0.71 |
7 x 5 |
0.81 |
8 x 5 |
1.08 |
8.5 x 5.5 |
1.33 |
9 x 6 |
1.75 |
9 x 7 |
1.80 |
10 x 7 |
2.46 |
10 x 8 |
2.61 |
11 x 7.50 |
3.00 |
11 x 8 |
2.98 |
12 x 8 |
3.44 |
12 x 9 |
2.98 |
13 x 8 |
3.47 |
14 x 8 |
4.11 |
13 x 9 |
4.12 |
14 x 9 |
5.06 |
15 x 9 |
5.41 |
14 x 10 |
5.65 |
13 x 11 |
5.75 |
15 x 10 |
6.27 |
16 x 10 |
6.46 |
17 x 10 |
7.36 |
15 x 11 |
8.05 |
17 x 11 |
8.14 |
18 x 11 |
8.99 |
16 x 12 |
9.35 |
18 x 12 |
10.53 |
18.5 x 12 |
11.66 |
18 x 13 |
10.00 |
19 x 12 |
12.23 |
19 x 13 |
14.66 |
20 x 14 |
15.23 |
23 x 13 |
15.47 |
22 x 14 |
16.85 |
20 x 15 |
15.29 |
23 x 14 |
17.66 |
25 x 15 |
37.65 |
25 x 20 |
Princess Cut
Carat Weight |
MM Size |
0.18 |
3.00 |
0.26 |
3.25 |
0.29 |
3.50 |
0.31 |
3.75 |
0.39 |
4.00 |
0.44 |
4.25 |
0.56 |
4.50 |
0.64 |
4.75 |
0.71 |
5.00 |
0.99 |
5.50 |
1.24 |
6.00 |
1.59 |
6.50 |
1.96 |
7.00 |
2.40 |
7.50 |
2.74 |
7.75 |
3.01 |
8.00 |
3.25 |
8.25 |
3.67 |
8.50 |
4.10 |
8.75 |
4.12 |
9.00 |
5.09 |
9.50 |
5.36 |
9.75 |
5.62 |
10.00 |
5.99 |
10.25 |
7.44 |
11.00 |
9.44 |
11.50 |
9.52 |
12.00 |
12.86 |
13.00 |
15.15 |
14.00 |
24.08 |
16.00 |
32.44 |
18.00 |
42.66 |
20.00 |
58.66 |
22.00 |
Radiant Cut
Carat Weight |
MM Size |
0.34 |
4.50 x 3.50 |
0.31 |
5 x 3 |
0.41 |
6 x 3 |
0.60 |
6 x 4 |
0.83 |
6.50 x 4.50 |
1.14 |
7 x 5 |
1.47 |
7.5 x 5.5 |
1.74 |
8 x 6 |
2.25 |
8.5 x 6.5 |
2.62 |
9 x 7 |
3.18 |
9.50 x 7.50 |
3.49 |
10 x 8 |
5.05 |
11 x 9 |
6.06 |
12 x 9 |
6.45 |
11.50 x 10 |
6.79 |
12 x 10 |
8.47 |
14 x 10 |
9.33 |
13 x 11 |
10.19 |
13.50 x 11 |
12.14 |
14 x 12 |
13.44 |
20 x 10 |
14.22 |
16 x 12 |
19.81 |
18 x 13 |
28.15 |
20 x 15 |
40.94 |
24 x 16 |
Round Cut
Carat Weight |
MM Size |
0.010 |
1.25 |
0.015 |
1.50 |
0.020 |
1.75 |
0.03 |
2.00 |
0.04 |
2.25 |
0.05 |
2.50 |
0.08 |
2.75 |
0.11 |
3.00 |
0.14 |
3.25 |
0.17 |
3.50 |
0.21 |
3.75 |
0.25 |
4.00 |
0.28 |
4.25 |
0.36 |
4.50 |
0.44 |
4.75 |
0.46 |
5.00 |
0.56 |
5.25 |
0.66 |
5.50 |
0.76 |
5.75 |
0.84 |
6.00 |
0.93 |
6.25 |
1.03 |
6.50 |
1.24 |
6.75 |
1.28 |
7.00 |
1.49 |
7.25 |
1.67 |
7.50 |
1.75 |
7.75 |
2.04 |
8.00 |
2.11 |
8.25 |
2.43 |
8.50 |
2.55 |
8.75 |
2.75 |
9.00 |
3.05 |
9.25 |
3.35 |
9.50 |
3.61 |
9.75 |
3.87 |
10.00 |
4.16 |
10.25 |
4.41 |
10.50 |
4.57 |
10.75 |
4.91 |
11.00 |
5.49 |
11.25 |
5.85 |
11.50 |
6.84 |
12.00 |
7.26 |
12.25 |
7.36 |
12.50 |
7.52 |
12.75 |
8.51 |
13.00 |
9.53 |
13.50 |
10.49 |
14.00 |
12.89 |
15.00 |
16.03 |
16.00 |
19.74 |
17.00 |
22.71 |
18.00 |
24.58 |
19.00 |
29.54 |
20.00 |
39.66 |
22.00 |
58.34 |
25.00 |
106.92 |
30.00 |
220.09 |
40.00 |
Trillion Cut
Carat Weight |
MM Size |
0.16 |
3.50 |
0.19 |
3.75 |
0.23 |
4.00 |
0.27 |
4.25 |
0.31 |
4.50 |
0.37 |
4.75 |
0.42 |
5.00 |
0.49 |
5.25 |
0.55 |
5.50 |
0.64 |
5.75 |
0.70 |
6.00 |
0.75 |
6.25 |
0.91 |
6.50 |
0.98 |
6.75 |
1.10 |
7.00 |
1.21 |
7.50 |
1.75 |
8.00 |
1.92 |
8.50 |
2.35 |
9.00 |
3.12 |
10.00 |
3.66 |
11.00 |
4.90 |
12.00 |
6.42 |
13.00 |
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