Age verification calculator
Age on a date is complete years between the birth date and that date. Someone born on 23 August 2008 turns 18 on 23 August 2026; on the day itself, not the day before or after.
How to check an age threshold
The common-law rule that a person attains an age at the start of the day before their birthday was abolished in England by the Family Law Reform Act 1969, and most jurisdictions now use the birthday itself. Where a threshold genuinely matters: alcohol, driving, contracts; the local statute is what governs, and it is worth checking rather than assuming, because a handful of jurisdictions still handle the boundary differently.
Questions
On their eighteenth birthday in most jurisdictions. A historical rule using the previous day was abolished in England in 1969.
Complete years between the birth date and the date in question.
No. It is arithmetic on a date you supply. Real verification requires checking a document.
It clamps to 28 February in common years here. Statutes vary on the legal answer.
Yes; set the second date to whenever you need.