How to calculate the volume of an egg

Written by emile heskey | 13/05/2017
How to calculate the volume of an egg
Working out the volume of an egg is a useful skill for the poultry industry. (egg in egg-cup image by Simone van den Berg from

Working out the volume of an egg has huge ramifications for the poultry industry, in terms of organising packing and storage space. Doing so is a case of measuring length and breadth, and then combining these two with a known coefficient. Calculating the volume of an egg can be either a math project for a class of students, or something undertaken more seriously by a poultry farmer. Either way, the calculations are the same and so are the methods.

Measure the length of the egg from base to tip by using a flexible measuring tape or a pair of calipers. Alternatively, wrap a piece of string around the egg, with one end at the base. Loop it all the way around the egg, ensuring it passes over the very top. Make a mark where the string returns to the base. Remove the string from the egg, and measure the length from end to mark. Halve this to get the length of the egg.

Measure the width of the egg at its widest part. Again, use a flexible measuring tape, a pair of calipers or a piece of string. Wrap the string around the egg at its widest and loop it until you have circled the whole egg. Make a mark at the point that the string has completed the whole loop. Take the string off and measure this. Divide it by two to gain the breadth measurement.

Multiply the breadth by itself, to find the square. If the breadth is 1.5 inches, then the breadth squared is 1.5 * 1.5 = 2.25 inches squared. Multiply this by the length of the egg. If the length is 2 inches, you will have a total of 2.25 * 2 = 4.5.

Multiply this by the number known as the "kv coefficient." This number is constantly refined as geometry and math improve their calculations, although kV is usually around 0.5. Multiply your number by 0.496 to gain the volume. So, using the previous example, 4.5 * 0.496 = 2.232 inches cubed. The volume of the egg, therefore, is 2.232 cubic inches.

Things you need

  • Measuring tape
  • Calipers

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