Carat to MM conversion values chart - MID House of Diamonds

MM Size	Carat Weight
0.8 mm.	0.0025 ct.
1 mm.	0.005 ct.
1.15 mm.	0.0067 ct.
1.12 mm.	0.0075 ct.
1.25 mm.	0.01 ct.
1.3 mm.	0.01 ct.
1.5 mm.	0.015 ct.
1.75 mm.	0.02 ct.
1.8 mm.	0.025 ct.
2 mm.	0.03 ct.
2.25 mm.	0.04 ct.
2.5 mm.	0.06 ct.
2.75 mm.	0.08 ct.
3 mm.	0.11 ct.
3.25 mm.	0.14 ct.
3.5 mm.	0.17 ct.
3.75 mm.	0.21 ct.
4 mm.	0.25 ct.
4.25 mm.	0.28 ct.
4.5 mm.	0.36 ct.
4.75 mm.	0.44 ct.
5.0 mm.	0.50 ct.
5.25 mm.	0.56 ct.
5.5 mm.	0.66 ct.
5.75 mm.	0.75 ct.
6 mm.	0.84 ct.
6.25 mm.	0.93 ct.
6.5 mm.	1.00 ct.
6.8 mm.	1.25 ct.

MM Size	Carat Weight
7 mm.	1.30 ct.
7.3 mm.	1.50 ct.
7.5 mm.	1.67 ct.
7.75 mm.	1.75 ct.
8 mm.	2.00 ct.
8.25 mm.	2.11 ct.
8.5 mm.	2.43 ct.
8.7 mm.	2.50 ct.
9 mm.	2.75 ct.
9.1 mm.	3.00 ct.
9.5 mm.	3.35 ct.
9.75 mm.	3.61 ct.
10 mm.	3.87 ct.
10.25 mm.	4.16 ct.
10.5 mm.	4.41 ct.
10.75 mm.	4.57 ct.
11 mm.	4.91 ct.
11.25 mm.	5.49 ct.
11.5 mm.	5.85 ct.
12 mm.	6.84 ct.
12.25 mm.	7.26 ct.
12.5 mm.	7.36 ct.
12.75 mm.	7.52 ct.
13 mm.	8.51 ct.
13.5 mm.	9.53 ct.
14 mm.	10.49 ct.
15 mm.	12.89 ct.
16 mm.	16.06 ct.

MM Size	Carat Weight
4.2 mm.	0.40 ct.
4.9 mm.	0.50 ct.
5.25 mm.	0.75 ct.
5.5 mm.	1.00 ct.
6 mm.	1.25 ct.
6.5 mm.	1.50 ct.
7 mm.	2.00 ct.
7.5 mm.	2.50 ct.

MM Size	Carat Weight
8 mm.	3.00 ct.
8.5 mm.	3.50 ct.
9 mm.	4.12 ct.
9.5 mm.	5.09 ct.
10 mm.	5.62 ct.
11 mm.	7.44 ct.
12 mm.	9.52 ct.
13 mm.	12.66 ct.

MM Size	Carat Weight
3×2 mm.	0.13 ct.
4×2.5 mm.	0.18 ct.
4×3 mm.	0.21 ct.
5×3 mm.	0.25 ct.
5×4 mm.	0.35 ct.
6×4 mm.	0.50 ct.
6.5×4.5 mm.	0.60 ct.
7×5 mm.	0.75 ct.
7.5×5.5 mm.	0.85 ct.
7.7×5.7 mm.	1.00 ct.
8×6 mm.	1.25 ct.
8.5×6.5 mm.	1.50 ct.
10×6 mm.	1.71 ct.
8.7×6.7 mm.	1.80 ct.
9×7 mm.	2.00 ct.
10×8 mm.	2.50 ct.
11×7.50 mm.	2.61 ct.
13×8 mm.	2.98 ct.
11×8 mm.	3.00 ct.

MM Size	Carat Weight
12×8 mm.	3.00 ct.
12×7 mm.	3.12 ct.
12×9 mm.	3.44 ct.
14×8 mm.	3.47 ct.
13×9 mm.	4.11 ct.
14×9 mm.	4.25 ct.
15×9 mm.	5.06 ct.
14×10 mm.	5.41 ct.
13×11 mm.	5.65 ct.
15×10 mm.	5.75 ct.
16×9 mm.	5.86 ct.
16×10 mm.	6.27 ct.
17×10 mm.	6.46 ct.
15×11 mm.	7.36 ct.
18×11 mm.	8.14 ct.
16×12 mm.	8.99 ct.
18×12 mm.	9.35 ct.
18×13 mm.	10.21 ct.

MM Size	Carat Weight
3×2 mm.	0.10 ct.
3.5×2 mm.	0.12 ct.
4×2 mm.	0.15 ct.
4×3 mm.	0.20 ct.
5×3 mm.	0.29 ct.
5.5×3.5 mm.	0.46 ct.
6×4 mm.	0.50 ct.
6.5×4.5 mm.	0.75 ct.
6.7×4.5 mm.	0.88 ct.
7×5 mm.	1.00 ct.
7.3×5.3 mm.	1.25 ct.
7.5×5.5 mm.	1.50 ct.
8×6 mm.	1.75 ct.
8.5×6.5 mm.	2.00 ct.

MM Size	Carat Weight
9×7 mm.	2.50 ct.
10×7.5 mm.	3.00 ct.
9.5×7.5 mm.	3.21 ct.
10×8 mm.	3.79 ct.
11×9 mm.	5.21 ct.
12×8 mm.	5.34 ct.
12×10 mm.	6.00 ct.
14×8 mm.	6.25 ct.
13×9 mm.	6.38 ct.
14×10 mm.	8.48 ct.
13×11 mm.	9.13 ct.
14×12 mm.	11.26 ct.
16×12 mm.	14.22 ct.

MM Size	Carat Weight
4.5×3.5 mm.	0.21 ct.
5×3 mm.	0.21 ct.
5.5×3.5 mm.	0.33 ct.
5×4 mm.	0.35 ct.
6×4 mm.	0.50 ct.
6×5 mm.	0.61 ct.
6.5×4.5 mm.	0.65 ct.
7×5 mm.	0.75 ct.
7.7×5.7 mm.	1.00 ct.
8×6 mm.	1.25 ct.
9×6 mm.	1.41 ct.
8.5×6.5 mm.	1.50 ct.
9×7 mm.	2.00 ct.

MM Size	Carat Weight
10×8 mm.	2.50 ct.
10.5×8.5 mm.	2.88 ct.
12×8 mm.	3.00 ct.
11×9 mm.	3.85 ct.
12×10 mm.	5.05 ct.
14×10 mm.	5.81 ct.
13×11 mm.	6.05 ct.
14×12 mm.	8.21 ct.
15×12 mm.	8.76 ct.
16×12 mm.	9.32 ct.
16×14 mm.	11.88 ct.
18×13 mm.	12.86 ct.
20×15 mm.	14.96 ct.

MM Size	Carat Weight
1.5 mm.	0.015 ct.
1.75 mm.	0.03 ct.
2 mm.	0.06 ct.
2.25 mm.	0.08 ct.
2.5 mm.	0.10 ct.
2.75 mm.	0.13 ct.
3 mm.	0.18 ct.
3.25 mm.	0.26 ct.
3.5 mm.	0.29 ct.
3.75 mm.	0.31 ct.
4 mm.	0.39 ct.
4.25 mm.	0.44 ct.
4.5 mm.	0.50 ct.
4.75 mm.	0.64 ct.
5 mm.	0.75 ct.
5.25 mm.	0.90 ct.
5.5 mm.	1.00 ct.
5.75 mm.	1.11 ct.
6 mm.	1.25 ct.
6.25 mm.	1.39 ct.

MM Size	Carat Weight
6.5 mm.	1.50 ct.
6.75 mm.	1.75 ct.
7 mm.	2.00 ct.
7.25 mm.	2.01 ct.
7.5 mm.	2.50 ct.
7.75 mm.	2.74 ct.
8 mm.	3.00 ct.
8.25 mm.	3.24 ct.
8.5 mm.	3.67 ct.
8.75 mm.	4.10 ct.
9 mm.	4.12 ct.
9.5 mm.	5.09 ct.
9.75 mm.	5.36 ct.
10 mm.	5.62 ct.
10.25 mm.	5.76 ct.
10.5 mm.	5.99 ct.
11 mm.	7.44 ct.
11.5 mm.	9.44 ct.
12 mm.	9.52 ct.

MM Size	Carat Weight
4 mm.	0.39 ct.
4.5 mm.	0.50 ct.
5 mm.	0.75 ct.
5.5 mm.	1.00 ct.
6 mm.	1.25 ct.
6.5 mm.	1.50 ct.
7 mm.	2.00 ct.
7.5 mm.	2.50 ct.

MM Size	Carat Weight
8 mm.	3.00 ct.
8.5 mm.	3.50 ct.
9 mm.	4.12 ct.
9.5 mm.	5.09 ct.
10 mm.	5.62 ct.
11 mm.	7.44 ct.
12 mm.	9.52 ct.
13 mm.	12.66 ct.

MM Size	Carat Weight
5×3 mm.	0.31 ct.
4.5×3.5 mm.	0.34 ct.
6×3 mm.	0.41 ct.
6×4 mm.	0.50 ct.
6.5×4.5 mm.	0.75 ct.
7×5 mm.	1.00 ct.
7.3×5.5 mm.	1.25 ct.
7.5×5.8 mm.	1.50 ct.
8×6 mm.	2.00 ct.
8.5×6.5 mm.	2.25 ct.
9×7 mm.	2.50 ct.
9.5×7.5 mm.	3.00 ct.
10×7 mm.	3.31 ct.

MM Size	Carat Weight
10×8 mm.	3.50 ct.
11×9 mm.	5.05 ct.
12×9 mm.	6.06 ct.
11.5×10 mm.	6.45 ct.
13×9 mm.	6.54 ct.
12×10 mm.	6.79 ct.
14×10 mm.	8.47 ct.
13×11 mm.	9.33 ct.
13.5×11.5 mm.	10.19 ct.
15×11 mm.	11.48 ct.
14×12 mm.	12.14 ct.
16×12 mm.	14.22 ct.

MM Size	Carat Weight
3.5 mm.	0.18 ct.
4 mm.	0.25 ct.
4.25 mm.	0.28 ct.
4.5 mm.	0.34 ct.
4.75 mm.	0.38 ct.
5 mm.	0.50 ct.
5.5 mm.	0.61 ct.
6 mm.	0.75 ct.
6.25 mm.	0.83 ct.
6.5 mm.	1.00 ct.
7 mm.	1.25 ct.
7.5 mm.	1.50 ct.

MM Size	Carat Weight
8 mm.	2.00 ct.
8.5 mm.	2.50 ct.
9 mm.	3.00 ct.
10 mm.	3.50 ct.
11 mm.	4.41 ct.
12 mm.	5.66 ct.
13 mm.	7.88 ct.
14 mm.	9.38 ct.
15 mm.	10.79 ct.
16 mm.	13.27 ct.
18 mm.	15.33 ct.

MM Size	Carat Weight
3×1.5 mm.	0.025 ct.
3.5×1.75 mm.	0.065 ct.
3.5×2 mm.	0.07 ct.
4×2 mm.	0.10 ct.
3.75×1.75 mm.	0.11 ct.
4.25×2.25 mm.	0.12 ct.
5×2.5 mm.	0.14 ct.
5.5×2.75 mm.	0.16 ct.
5.5×3 mm.	0.18 ct.
5×3 mm.	0.20 ct.
6.5×3 mm.	0.23 ct.
6×3 mm.	0.25 ct.
7×3 mm.	0.30 ct.
7.5×3.5 mm.	0.33 ct.
7×4 mm.	0.34 ct.
8×4 mm.	0.50 ct.
8.75×4.25 mm.	0.70 ct.
9×4.5 mm.	0.75 ct.

MM Size	Carat Weight
9.5×4.7 mm.	0.85 ct.
10×5 mm.	1.00 ct.
11×5.5 mm.	1.25 ct.
11.5×6 mm.	1.33 ct.
12×6 mm.	1.50 ct.
13×6.5 mm.	2.00 ct.
14×7 mm.	2.50 ct.
15×7 mm.	3.00 ct.
14×8 mm.	3.00 ct.
15×7.5 mm.	3.25 ct.
15×8 mm.	3.44 ct.
16×8 mm.	3.86 ct.
16.5×8.25 mm.	4.00 ct.
17×8.5 mm.	4.88 ct.
17.5×10 mm.	5.50 ct.
20×8 mm.	7.08 ct.
20×10 mm.	7.94 ct.
20×11 mm.	9.50 ct.

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CARAT TO MM

Carat weight to Millimeter Converter is a professional tool that helps to approximately determine the diamond size on a finger.

See below the equivalent carat to mm size table for Round Brilliant Cut, Cushion Cut, Pear shape, Emerald Cut, Oval Cut, Princess Cut, Hear shape, Marquise cut, Asscher cut and Radiant cut.

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