CARAT WEIGHT	LENGTH MM SIZE	WIDTH MM SIZE	DEPTH MM SIZE	TABLE %
0.30 - 0.39 ct	4.20 - 4.40 mm	4.20 - 4.40 mm	2.60 - 2.80 mm	58 - 62%
0.40 - 0.49 ct	4.40 - 4.70 mm	4.40 - 4.70 mm	2.80 - 3.00 mm	58 - 62%
0.50 - 0.69 ct	4.70 - 5.10 mm	4.70 - 5.10 mm	3.00 - 3.30 mm	58 - 62%
0.70 - 0.89 ct	5.10 - 5.50 mm	5.10 - 5.50 mm	3.30 - 3.60 mm	58 - 62%
0.90 - 0.99 ct	5.50 - 5.80 mm	5.50 - 5.80 mm	3.60 - 3.80 mm	58 - 62%
1.00 - 1.24 ct	5.80 - 6.20 mm	5.80 - 6.20 mm	3.80 - 4.10 mm	58 - 62%
1.25 - 1.49 ct	6.20 - 6.50 mm	6.20 - 6.50 mm	4.10 - 4.30 mm	58 - 62%
1.50 - 1.74 ct	6.50 - 6.90 mm	6.50 - 6.90 mm	4.30 - 4.60 mm	58 - 62%
1.75 - 1.99 ct	6.90 - 7.20 mm	6.90 - 7.20 mm	4.60 - 4.80 mm	58 - 62%
2.00 - 2.49 ct	7.20 - 7.60 mm	7.20 - 7.60 mm	4.80 - 5.10 mm	58 - 62%
2.50 - 2.99 ct	7.60 - 8.00 mm	7.60 - 8.00 mm	5.10 - 5.40 mm	58 - 62%
3.00 - 3.49 ct	8.00 - 8.40 mm	8.00 - 8.40 mm	5.40 - 5.70 mm	58 - 62%
3.50 - 3.99 ct	8.40 - 8.80 mm	8.40 - 8.80 mm	5.70 - 6.00 mm	58 - 62%
4.00 - 4.49 ct	8.80 - 9.20 mm	8.80 - 9.20 mm	6.00 - 6.30 mm	58 - 62%
4.50 - 5.00 ct	9.20 - 9.60 mm	9.20 - 9.60 mm	6.30 - 6.60 mm	58 - 62%

Note: Square cushion cut diamonds feature rounded corners and slightly curved sides with equal length and width dimensions

Professional Square Cushion Cut Diamond Size Chart