How does this converter compute ABV Fraction to US Proof?

Both scales are normalized through ABV percent, then converted using a fixed ratio.

Is the mirror direction available?

Yes. Use the switch button or open the US Proof to ABV Fraction page.

Can I use decimal inputs?

Yes. Decimal strength values are supported for lab, labeling, and mixology use cases.

fraction to proof (US)

1 ABV Fraction = 200 US Proof · fixed factor via canonical reference constants · no offset

Direct Answer

1 ABV Fraction equals 200 US Proof

This conversion uses a fixed factor based on canonical reference constants.

For 0.25 ABV Fraction, the result equals 50 US Proof.

Converter Calculator

ABV Fraction (fraction)

1 ABV Fraction (fraction) =
200 US Proof (proof (US))

Explanation

Multiply by 200 because 1 fraction corresponds to 100% ABV and 1 proof (US) corresponds to 0.5% ABV. ABV fraction is a 0 to 1 scale where 1 equals 100% ABV. US proof is defined as 2 times ABV.

ABV Fraction to US Proof follows one canonical fixed-factor definition tied to canonical reference constants, keeping calculator output and table values aligned.

Table rows are generated from the same conversion constants used by the live calculator to maintain deterministic results.

Method & Reference (Verified)

Method basis: ABV Fraction to US Proof uses the page-specific conversion model shown in Direct Answer.
Applied factor: 1 ABV Fraction = 200 US Proof (as defined for this route).
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

ABV Fraction (fraction)	US Proof (proof (US))
0.25	50
0.5	100
1	200
5	1,000
12	2,400
20	4,000
40	8,000
57.15	11,430
80	16,000
100	20,000