US proof is exactly twice the alcohol by volume. To read ABV from proof, divide by 2. To read proof from ABV, multiply by 2. Pick a common value below, or open the interactive converter for any number and for the UK scale.
Proof to ABV
200 proof
equals 100% ABV
190 proof
equals 95% ABV
160 proof
equals 80% ABV
151 proof
equals 75.5% ABV
150 proof
equals 75% ABV
140 proof
equals 70% ABV
138 proof
equals 69% ABV
130 proof
equals 65% ABV
120 proof
equals 60% ABV
110 proof
equals 55% ABV
100 proof
equals 50% ABV
90 proof
equals 45% ABV
80 proof
equals 40% ABV
70 proof
equals 35% ABV
60 proof
equals 30% ABV
50 proof
equals 25% ABV
40 proof
equals 20% ABV
ABV to Proof
Confirm the real strength: proof printed on a label is one thing, the spirit in your jar is another. A 0 to 200 proof alcoholmeter reads it directly at 20°C.
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Common questions
How do you convert proof to ABV?
On the US scale, divide the proof by 2. US proof is defined as exactly twice the alcohol by volume, so 100 proof is 50% ABV.
How do you convert ABV to proof?
Multiply the ABV by 2 on the US scale. A spirit at 40% ABV is 80 proof.
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