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.

### Unit 14: Lesson 6

Converting units of volume

# 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.
Problem 1A
• Current
Identify the most reasonable unit to measure the volume of a neighborhood swimming pool.

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
• Current
Convert.
49 liters equals
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?

• how many liters are there in 10.000
• 10,000mL = 10L
10ml = 0.01mL
• why is ml is smaller then l
• In the metric system, the prefix m stands for “milli”, which means “1/1,000 of”. So 1 ml (milliliter) is only 1/1,000 of 1 l (liter). Therefore, 1 ml is smaller than 1 l.
• This is kind of a weird question ok. If numbers can go infinite, like for example, 10,100,1000... and so on forever. And we can name them like, ten, hundreds, thousands like that. Then if it kept going. How are we going to name them infinitely?
• We don't, it's impossible because the numbers go on INFINITELY
• United States customary units form a system of measurement units commonly used in the United States and U.S. territories since being standardized and adopted in 1832. The United States customary system developed from English units which were in use in the British Empire before the U.S. became an independent country.
• Pounds to Kilograms: 1 kg = 2.2 lb.
Gallons to Liters: 1 gal = 3.785 L.
Feet to Meters: 1 foot = 0.305 m.
Miles to Kilometers: 1 mi = 1.61 km.
Cups to Milliliters: 1 c = 240 mL.
Inches to Centimeters: 1 in = 2.54 cm.
Ounces to Grams: 1 oz = 28.3 g.
• So why is mL writen with a uppercase L?

Sorry if I it says it and I looked over it. :P