Conversion formula

The conversion factor from liters to milliliters is 1000, which means that 1 liter is equal to 1000 milliliters:

1 L = 1000 ml

To convert 21 liters into milliliters we have to multiply 21 by the conversion factor in order to get the volume amount from liters to milliliters. We can also form a simple proportion to calculate the result:

1 L → 1000 ml

21 L → V_(ml)

Solve the above proportion to obtain the volume V in milliliters:

V_(ml) = 21 L × 1000 ml

V_(ml) = 21000 ml

The final result is:

21 L → 21000 ml

We conclude that 21 liters is equivalent to 21000 milliliters:

21 liters = 21000 milliliters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 milliliter is equal to 4.7619047619048E-5 × 21 liters.

Another way is saying that 21 liters is equal to 1 ÷ 4.7619047619048E-5 milliliters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one liters is approximately twenty-one thousand milliliters:

21 L ≅ 21000 ml

An alternative is also that one milliliter is approximately zero times twenty-one liters.

Conversion table

liters to milliliters chart

For quick reference purposes, below is the conversion table you can use to convert from liters to milliliters