If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Metric units of volume review (L and mL)

Review the size of liters and milliliters and how to convert between the two.  Then, try some practice problems.

Metric units of volume

Volume measures capacity. For example, the volume of a bowl is the amount of space inside the bowl or how much water, for example it would take to fill the bowl.
In the metric system of measurement, the most common units of volume are milliliters and liters.

How big is a milliliter?

A single raindrop contains about 1 milliliter of liquid:
A raindrop.

How big is a liter?

This bottle contains about 1 liter of liquid:
A bottle of liquid.
Want to learn more about metric units of volume? Check out this video.
Problem 1A
Identify the most reasonable unit to measure the volume of a neighborhood swimming pool.
Choose 1 answer:
Choose 1 answer:

Want to try more problems like this? Check out this exercise,

Converting liters to milliliters

start color #11accd, 1, end color #11accd, start text, space, l, i, t, e, r, end text, equals, start color #1fab54, 1000, end color #1fab54, start text, space, m, i, l, l, i, l, i, t, e, r, s, end text
To convert start text, space, l, i, t, e, r, s, end text to start text, m, i, l, l, i, l, i, t, e, r, s, end text we multiply the number of start text, l, i, t, e, r, s, end text by start color #1fab54, 1, comma, 000, end color #1fab54.
Example:
start color #11accd, 8, end color #11accd, start text, space, l, i, t, e, r, s, end text, equals, start color #11accd, 8, end color #11accd, times, start color #1fab54, 1000, end color #1fab54, equals, start color #11accd, 8, end color #11accd, start color #1fab54, 000, end color #1fab54, start text, space, m, i, l, l, i, l, i, t, e, r, s, end text

Converting milliliters to liters

start color #ff00af, 1, end color #ff00af, start text, space, m, i, l, l, i, l, i, t, e, r, end text, equals, start fraction, 1, divided by, start color #28ae7b, 1000, end color #28ae7b, end fraction, start text, space, l, i, t, e, r, end text
To convert start text, m, i, l, l, i, l, i, t, e, r, s, end text to start text, l, i, t, e, r, s, end text we divide the number of start text, m, i, l, l, i, l, i, t, e, r, s, end text by start color #1fab54, 1, comma, 000, end color #1fab54.
Example:
start color #ff00af, 45, end color #ff00af, start text, space, m, L, end text, equals, start fraction, start color #ff00af, 45, end color #ff00af, divided by, start color #28ae7b, 1000, end color #28ae7b, end fraction, equals, start color #ff00af, 45, end color #ff00af, divided by, start color #28ae7b, 1000, end color #28ae7b, equals, start color #6495ed, 0, point, 045, end color #6495ed, start text, space, L, end text
Problem 2A
Convert.
49 liters equals
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
milliliters

Want to try more problems like this? Check out these exercises:
Convert larger units to smaller units
Converting between units

Want to join the conversation?