How do you convert 4 liters to milliliters?

Conversions in the metric system are very easy and only involve powers of 10. There are many units, but we only use some of them.

Capacity involves the following units...

#Kl" "Hl" "Dl" "litres" "dl" "cl" "ml#

Each unit is ten times as big as the unit on the right.

To convert to a bigger unit, divide by 10 for each conversion.
To convert to a smaller unit, multiply by 10 for each conversion.

#litres " "rarr" "ml: xx 10 xx 10 xx 10#

Litres to ml # xx 1000#

#4 xx10 xx 10 xx 10 = 4000ml#