Acceptable Age Range Calculator
View the popular adult age-range rule and learn why social formulas cannot determine compatibility or legality.
Adult age-range calculator
A neutral presentation of a cultural rule of thumb.
Use the range carefully
Searches for an “acceptable” age gap often reflect a desire for social reassurance. There is no single number that applies to all adults, cultures and situations. A better evaluation asks whether both people can communicate freely, make independent decisions and share compatible expectations.
Privacy
Input values are processed by JavaScript in your browser. The calculator code does not submit them to a server or place them in the URL.
Frequently asked questions
What does acceptable mean here?
It refers only to a popular social formula, not a universal moral, scientific or legal standard.
Why is the calculator adults only?
To avoid presenting dating recommendations involving minors.
Can two people outside the range have a healthy relationship?
A formula cannot determine relationship health. Real relationships depend on many factors beyond age.