21 milliliters in US customary cups

Result

The conversion result is: 21 milliliters is equivalent to 0.0887618095923379 US customary cups.^[1]

Conversion formula
How to convert 21 milliliters to US customary cups?

We know (by definition) that: 1 ml ≈ 0.00422675283773037 uscup.

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

1 ml / 21 ml ≈ 0.00422675283773037 uscup / x uscup

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

x uscup ≈ (21 ml / 1 ml) * 0.00422675283773037 uscup → x uscup ≈ 0.08876180959233776 uscup

Conclusion:

21 ml ≈ 0.08876180959233776 uscup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary cup is equal to 11.2661065 times 21 milliliters.

It can also be expressed as: 21 milliliters is equal to 1 / 11.2661065 US customary cups.

Approximation

An approximate numerical result would be: twenty-one milliliters is about zero point zero nine US customary cups, or alternatively, a US customary cup is about eleven point two six times twenty-one milliliters.