4 Ways to Calculate Volume in Litres - wikiHow (2024)

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Co-authored byGrace Imson, MA

Last Updated: September 19, 2023Fact Checked

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1. 1

   Convert the dimensions to centimeters. If the dimensions are given in meters, inches, feet, or some other unit of measurement,

   convert each dimension to centimeters (cm) before calculating the volume.

   This will make it easier to convert to liters.

   • Always double-check that the dimensions of the shape you're working with have the same unit before you calculate the volume.^[2]

   Key Conversions
   1 meter = 100 centimeters.^[3] So, if the length of a cube is 2.5 meters, that converts to 250 centimeters, since .
   1 inch = 2.54 centimeters.^[4] So, if the length of a cube is 5 inches, that converts to 12.7 centimeters, since .
   1 foot = 30.48 centimeters.^[5] So, if the length of a cube is 3 feet, that converts to 91.44 centimeters, since .

2. 2

   Find the volume of the shape. How you find the volume will depend on the shape of the three-dimensional object you are measuring, since the volume of each type of shape is calculated differently. To find the volume of a cube, you can use the formula

   .

   ^[6] The volume of a three-dimensional shape will be in cubic units, such as cubic centimeters ().

   • For instance, if a fish tank is 40.64 cm long, 25.4 cm wide, and 20.32 tall you would calculate the volume by multiplying these dimensions together:
     
     
   • To find the volume of a cylinder, start by finding the height of the cylinder. Then, find the radius of the circle at the top or bottom. Next, find the area of the circle, which you can find with the formula π, where r is the radius. Finally, multiply the area of the circle by the height of the cylinder to find the volume._cylinder π^[7]

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3. 3

   Convert cubic centimeters to liters. To do this, use the conversion rate

   .

   Dividing the volume (in cubic centimeters) of the shape by 1,000 will give you the volume in liters (L).^[8]

   • If the volume of the fish tank, in cubic centimeters, is 20,975, to find the volume in liters, calculate . So, a fish tank that is 40.64 cm long, 25.4 cm wide, and 20.32 tall has a volume of 20.975 L.

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1. 1

   Convert milliliters to liters. There are

   1,000 milliliters (mL) in 1 liter (L).

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   So, to convert milliliters to liters, you would divide the number of milliliters by 1,000.^[9]

   • If the volume of a carton of almond milk is 1,890 mL, to convert to liters, you would calculate .
2. 2

   Convert centiliters to liters. There are

   100 centiliters (cL) in 1 liter.

   So, to convert centiliters to liters, you would divide the number of centiliters by 100.^[10]

   • If a the volume of a carton of almond milk is 189 cL, to convert to liters, you would calculate .
3. 3

   Convert deciliters to liters. There are

   10 deciliters (dL) in 1 liter.

   So, to convert deciliters to liters, you would divide the number of deciliters by 10.^[11]

   • If a the volume of a carton of almond milk is 18.9 dL, to convert to liters, you would calculate .
4. 4

   Convert kiloliters to liters. There are

   1000 liters in 1 kiloliter (kl).

   So, to convert kiloliters to liters, you would multiply the number of kiloliters by 1,000.^[12]

   • If the volume of a kiddie pool is 240 kl, to convert to liters, you would calculate .
5. 5

   Convert hectoliters to liters. There are

   100 liters in 1 hectoliter (hl).

   So, to convert hectoliters to liters, you would multiply the number of hectoliters by 100.^[13]

   • If the volume of a kiddie pool is 2,400 hl, to convert to liters, you would calculate .
6. 6

   Convert decaliters to liters. There are

   10 liters in 1 decaliters (dal).

   So, to convert decaliters to liters, you would multiply the number of decaliters by 10.^[14]

   • If the volume of a kiddie pool is 24,000 dal, to convert to liters, you would calculate .

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1. 1

   Convert fluid ounces to liters. There are

   33.81 fluid ounces (fl oz) in 1 liter.

   So, to convert fluid ounces to liters, you would divide the number of fluid ounces by 33.81.^[15]

   • If a carton of almond milk is 128 fl oz, to convert to liters, you would calculate .
2. 2

   Convert pints to liters. There are

   2.113 fluid pints (fl pt) in 1 liter.

   So, to convert fluid pints to liters, you would divide the number of fluid pints by 2.113.^[16]

   • If a pitcher has a capacity of 8 fl pt, to convert to liters, you would calculate .
3. 3

   Convert quarts to liters. There are

   1.057 quarts (qt) in 1 liter.

   So, to convert quarts to liters, you would divide the number quarts of by 1.057.^[17]

   • If a pitcher has a capacity of 4 quarts, to convert to liters, you would calculate .
4. 4

   Convert gallons to liters. There are

   3.7854 liters in 1 gallon (gal).

   So, to convert gallons to liters, you would multiply the number gallons of by 3.7854.^[18]

   • If a fish tank has a volume of 120 gallons, to convert to liters, you would calculate .

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