Relationship Between Proof & Content

Relationship Between Proof & Content

The relationship between Proofº and alcohol content V/V

Proofº	% Alcohol v/v UK	% Alcohol v/v US
1	0.57	0.5
2	1.15	1.0
3	1.71	1.5
4	2.23	2.0
5	2.86	2.5
10	5.71	5.0
20	11.42	10.0
50	28.50	25.0
100	57.10	50.0

To convert Proofº to Alcohol % v/v:
	Alcohol % =	Proofº x 100
		175.1

To convert Alcohol % v/v to Proofº:
	Proofº =	Alcohol% x 175.1
		100

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