21 US pints in imperial gallons

Conversion formula
How to convert 21 US pints to imperial gallons?

We know (by definition) that: $1\mathrm{uspint}\approx 0.104084273078624\mathrm{imperialgallon}$

We can set up a proportion to solve for the number of imperial gallons.

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

Conclusion: 21 ⁢ uspint ≈ 2.185769734651104 ⁢ imperialgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial gallon is equal to 0.457504733525659 times 21 US pints.

It can also be expressed as: 21 US pints is equal to $\frac{1}{\mathrm{0.457504733525659}}$ imperial gallons.

Approximation

An approximate numerical result would be: twenty-one US pints is about two point one eight imperial gallons, or alternatively, a imperial gallon is about zero point four six times twenty-one US pints.