Enter the older person’s age into the calculator to determine the acceptable age gap in a relationship.

Acceptable Age Gap Formula

The following formula is used to calculate the acceptable age gap in a relationship.

AG = (O / 2) + 7


  • AG is the acceptable age gap (years) O is the older person’s age (years)

To calculate the acceptable age gap, divide the older person’s age by 2, then add 7 to the result. This formula is often used as a rule of thumb for determining socially acceptable age differences in relationships.

What is an Acceptable Age Gap?

An acceptable age gap refers to the socially accepted range of years between two people in a romantic relationship. This can vary greatly depending on cultural norms, personal preferences, and societal expectations. Generally, a common rule is the “half-your-age-plus-seven” rule, which suggests that the youngest person one should date is half their age plus seven years. However, what is considered “acceptable” can be subjective and ultimately depends on the mutual consent and comfort of both parties involved.

How to Calculate Acceptable Age Gap?

The following steps outline how to calculate the Acceptable Age Gap using the formula: AG = (O / 2) + 7

  1. First, determine the older person’s age (O) in years.
  2. Next, divide the older person’s age (O) by 2.
  3. Then, add 7 to the result of the division.
  4. Finally, calculate the Acceptable Age Gap (AG).
  5. After inserting the older person’s age (O) and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

older person’s age (O) = 40