Convert US barrel to US dry 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 dry barrel
The US dry barrel is equal to exactly $7\,056$ cubic inches.
How to convert US barrel to US dry barrel
$$\text{Volume}_{\text{bbl (dry) (us)}} = \text{Volume}_{\text{bbl (US)}} \cdot 1.03125$$
Examples
Example 1
Convert $20.0\ \text{bbl (US)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 20.0 \cdot 1.03125$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 20.625$$
$$\therefore \ 20.0\ \text{bbl (US)} = 20.625 \ \text{bbl (dry) (us)}$$
Example 2
Convert $60.0\ \text{bbl (US)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 60.0 \cdot 1.03125$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 61.875$$
$$\therefore \ 60.0\ \text{bbl (US)} = 61.875 \ \text{bbl (dry) (us)}$$
Example 3
Convert $120.0\ \text{bbl (US)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 120.0 \cdot 1.03125$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 123.75$$
$$\therefore \ 120.0\ \text{bbl (US)} = 123.75 \ \text{bbl (dry) (us)}$$
Example 4
Convert $140.0\ \text{bbl (US)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 140.0 \cdot 1.03125$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 144.375$$
$$\therefore \ 140.0\ \text{bbl (US)} = 144.375 \ \text{bbl (dry) (us)}$$
Example 5
Convert $185.0\ \text{bbl (US)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 185.0 \cdot 1.03125$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 190.78125$$
$$\therefore \ 185.0\ \text{bbl (US)} = 190.78125 \ \text{bbl (dry) (us)}$$