How does this converter compute ABV Per Mille 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 Per Mille page.

Can I use decimal inputs?

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

permille to proof (US)

1 ABV Per Mille = 0.2 US Proof · fixed factor via canonical reference constants · no offset

Direct Answer

1 ABV Per Mille equals 0.2 US Proof

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

For 0.25 ABV Per Mille, the result equals 0.05 US Proof.

Converter Calculator

ABV Per Mille (permille)

1 ABV Per Mille (permille) =
0.2 US Proof (proof (US))

Explanation

Multiply by 0.2 because 1 permille corresponds to 0.1% ABV and 1 proof (US) corresponds to 0.5% ABV. Per mille here means parts per thousand of ABV by volume. US proof is defined as 2 times ABV.

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

Manual spot checks match the displayed values because calculator and table share the same conversion definitions.

Method & Reference (Verified)

Method basis: ABV Per Mille to US Proof uses the page-specific conversion model shown in Direct Answer.
Applied factor: 1 ABV Per Mille = 0.2 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 Per Mille (permille)	US Proof (proof (US))
0.25	0.05
0.5	0.1
1	0.2
5	1
12	2.4
20	4
40	8
57.15	11.43
80	16
100	20