Enter the number of people aged 0–14 and 65+ (dependents) and the number of people aged 15–64 (working-age). You may also use percentages of the total population instead of counts, as long as both inputs use the same basis. The Dependency Ratio Calculator will evaluate and display the Dependency Ratio (dependents per 100 working-age people). 

Dependency Ratio Calculator

Dependency Ratio Formula

The following formula is used to calculate the Dependency Ratio. 

DR = (D / WC) \times 100
  • Where DR is the Dependency Ratio (dependents per 100 working-age people)
  • D is the dependent population (ages 0–14 and 65+) (people, or % of total population)
  • WC is the working-age population (ages 15–64) (people, or % of total population)

To calculate the dependency ratio, divide the number (or percentage) of people aged 0–14 and 65+ by the number (or percentage) of people aged 15–64, then multiply by 100.

How to Calculate Dependency Ratio?

The following example problems outline how to calculate Dependency Ratio.

Example Problem #1:

  1. First, determine the dependent population (ages 0–14 and 65+).
    • The dependent population is given as: 400,000 people.
  2. Next, determine the working-age population (ages 15–64).
    • The working-age population is provided as: 1,500,000 people.
  3. Finally, calculate the Dependency Ratio using the equation above: 

DR = D / WC × 100

The values given above are inserted into the equation below and the solution is calculated:

DR = 400,000 / 1,500,000 × 100 = 26.667 dependents per 100 working-age people


Example Problem #2: 

For this problem, the variables required are provided below:

Dependent population (ages 0–14 and 65+) = 300,000

Working-age population (ages 15–64) = 2,000,000

Test your knowledge using the equation and check your answer with the calculator above.

DR = D / WC × 100 = ?