How is ABV Per Mille to UK Proof calculated?

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 UK 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 (UK)

1 ABV Per Mille = 0.174978 UK Proof · fixed factor via canonical reference constants · no offset

Direct Answer

1 ABV Per Mille equals 0.174978 UK Proof

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

For 0.25 ABV Per Mille, the result equals 0.043745 UK Proof.

Converter Calculator

ABV Per Mille (permille)

1 ABV Per Mille (permille) =
0.174978 UK Proof (proof (UK))

Explanation

Multiply by 0.174978127734 because 1 permille corresponds to 0.1% ABV and 1 proof (UK) corresponds to 0.5715% ABV. Per mille here means parts per thousand of ABV by volume. 100 UK proof equals 57.15% ABV.

From ABV Per Mille to UK Proof, the calculator applies one stable fixed-factor model derived from canonical reference constants.

The same constants drive calculator output and common-value rows, so quick checks and manual calculations remain consistent.

Method & Reference (Verified)

Method basis: ABV Per Mille to UK Proof uses the page-specific conversion model shown in Direct Answer.
Applied factor: 1 ABV Per Mille = 0.174978127734 UK 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)	UK Proof (proof (UK))
0.25	0.043745
0.5	0.087489
1	0.174978
5	0.874891
12	2.099738
20	3.499563
40	6.999125
57.15	10
80	13.99825
100	17.497813