Half your age plus 7

In discussions about age differences in relationships, what formula is commonly referenced, such as half of a person’s age plus seven years?

The formula you’re referencing—“half your age plus seven”—is a commonly cited guideline in discussions about acceptable age differences in romantic relationships. According to this social rule, the youngest age someone can date is calculated as:

(Your age ÷ 2) + 7

For example, if you’re 30:

  • (30 ÷ 2) + 7 = 15 + 7 = 22
    So a 30-year-old “shouldn’t” date someone younger than 22, based on this guideline.

Origin and Use:

  • It’s not a strict rule, but rather a societal norm meant to suggest what may be socially acceptable or less likely to be viewed as inappropriate.
  • It works both ways: for the oldest socially acceptable partner, it’s usually “your age minus seven, then multiplied by two.”

Caveat:

  • The formula is a rough suggestion and doesn’t account for maturity, life stage, or cultural differences—many healthy relationships exist outside of this range!
  • Ultimately, mutual consent and legal age are the most important factors.

If you’d like, I can explain how this formula is viewed in different cultures or discuss its limitations!