Enter up to 5 different ratios into the Average Ratio Calculator. This calculator treats each ratio as a numeric value (first term ÷ second term, e.g., 2:3 = 2/3 ≈ 0.6667), then computes the arithmetic mean of those values and displays it in AR:1 form.

Average Ratio Calculator

Enter up to 5 ratios to calculate the average ratio (accepted formats: A:B, A/B, or a decimal)

Average Ratio Formula

The following formula is used to calculate the Average Ratio (i.e., the arithmetic mean of the ratios after converting each ratio to a numeric value).

AR = \frac{R_1 + R_2 + \dots + R_n}{n}
  • Where AR is the average (numeric) ratio value, commonly displayed as AR:1
  • R1 … Rn are the individual ratios expressed as numbers (e.g., 2:3 = 2/3)
  • n is the number of ratios entered (1 to 5)

How to Calculate Average Ratio?

The following example problems outline how to calculate Average Ratio.

Example Problem #1:

  1. First, determine up to 5 different ratios.
    • The ratios are given as: 1/4, 5/2, 6/10, 7/3.
  2. Finally, calculate the Average Ratio using the equation above.

AR = (R1 + R2 + … + Rn) / n

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

AR = (1/4 + 5/2 + 6/10 + 7/3) / 4 = 1.4208, which can be displayed as approximately 1.42:1


Example Problem #2: 

For this problem, the variables required are provided below:

Ratios = 2/1, 3/1, 5/2

Test your knowledge using the equation and check your answer with the calculator above. AR = (R1 + R2 + … + Rn) / n = ?