21 liters in US customary cups
Result
The conversion result is: 21 liters is equivalent to 88.7618095923379 US customary cups.[1]
Conversion formula
How to convert 21 liters to US customary cups?
We know (by definition) that: 1 liter ≈ 4.22675283773038 uscup.
We can set up a proportion to solve for the number of US customary cups.
1 liter / 21 liter ≈ 4.22675283773038 uscup / x uscup
Now, we cross multiply to solve for our unknown x:
x uscup ≈ (21 liter / 1 liter) * 4.22675283773038 uscup → x uscup ≈ 88.76180959233797 uscup
Conclusion:
21 liter ≈ 88.76180959233797 uscup
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary cup is equal to 0.0112661065 times 21 liters.
It can also be expressed as: 21 liters is equal to 1 / 0.0112661065 US customary cups.
Approximation
An approximate numerical result would be: twenty-one liters is about eighty-eight point seven six US customary cups, or alternatively, a US customary cup is about zero point zero one times twenty-one liters.
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.