21 imperial quarts in US gallons

Result

The conversion result is: 21 imperial quarts is equivalent to 6.30498710890049 US gallons.[1]

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

We know (by definition) that: 1 imperialquart ≈ 0.300237481376214 usgallon.

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

1 imperialquart / 21 imperialquart ≈ 0.300237481376214 usgallon / x usgallon

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

x usgallon ≈ (21 imperialquart / 1 imperialquart) * 0.300237481376214 usgallon → x usgallon ≈ 6.304987108900494 usgallon

Conclusion:

21 imperialquart ≈ 6.304987108900494 usgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US gallon is equal to 0.158604606595998 times 21 imperial quarts.

It can also be expressed as: 21 imperial quarts is equal to 1 / 0.158604606595998 US gallons.

Approximation

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

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.