18 imperial gallons in US quarts

Conversion formula
How to convert 18 imperial gallons to US quarts?

We know (by definition) that: $1\mathrm{imperialgallon}\approx 4.80379970201942\mathrm{usquart}$

We can set up a proportion to solve for the number of US quarts.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 18 ⁢ imperialgallon ≈ 86.46839463634956 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.0115649192309582 times 18 imperial gallons.

It can also be expressed as: 18 imperial gallons is equal to $\frac{1}{\mathrm{0.0115649192309582}}$ US quarts.

Approximation

An approximate numerical result would be: eighteen imperial gallons is about eighty-six point four six US quarts, or alternatively, a US quart is about zero point zero one times eighteen imperial gallons.