Convert US barrel to US beer barrel
Unit definitions
US barrel
The US barrel is the standard liquid barrel in the US customary system. One US barrel equals $31.5$ US liquid gallons.
US beer barrel
The US beer barrel is defined as exactly $31$ US liquid gallons.
How to convert US barrel to US beer barrel
$$\text{Volume}_{\text{bbl (beer)}} = \text{Volume}_{\text{bbl (US)}} \cdot 1.016129032258064516129032258064516$$
Examples
Example 1
Convert $25.0\ \text{bbl (US)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 25.0 \cdot 1.016129032258064516129032258064516$$
$$\text{Volume}_{\text{bbl (beer)}} = 25.403226$$
$$\therefore \ 25.0\ \text{bbl (US)} = 25.403226 \ \text{bbl (beer)}$$
Example 2
Convert $75.0\ \text{bbl (US)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 75.0 \cdot 1.016129032258064516129032258064516$$
$$\text{Volume}_{\text{bbl (beer)}} = 76.209677$$
$$\therefore \ 75.0\ \text{bbl (US)} = 76.209677 \ \text{bbl (beer)}$$
Example 3
Convert $105.0\ \text{bbl (US)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 105.0 \cdot 1.016129032258064516129032258064516$$
$$\text{Volume}_{\text{bbl (beer)}} = 106.693548$$
$$\therefore \ 105.0\ \text{bbl (US)} = 106.693548 \ \text{bbl (beer)}$$
Example 4
Convert $150.0\ \text{bbl (US)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 150.0 \cdot 1.016129032258064516129032258064516$$
$$\text{Volume}_{\text{bbl (beer)}} = 152.419355$$
$$\therefore \ 150.0\ \text{bbl (US)} = 152.419355 \ \text{bbl (beer)}$$
Example 5
Convert $180.0\ \text{bbl (US)}$ to $\text{bbl (beer)}$.
$$\text{Volume}_{\text{bbl (beer)}} = 180.0 \cdot 1.016129032258064516129032258064516$$
$$\text{Volume}_{\text{bbl (beer)}} = 182.903226$$
$$\therefore \ 180.0\ \text{bbl (US)} = 182.903226 \ \text{bbl (beer)}$$