How to Use the Legal Adult Age Calculator
Enter your date of birth and select your state to find the exact date you become a legal adult, along with the date you gain federal voting rights. In most U.S. states, the age of majority is 18 — but Alabama and Nebraska set it at 19, and Mississippi sets it at 21, so the calculator lets you pick your state's rule.
Voting age, on the other hand, is fixed nationwide: the 26th Amendment guarantees every U.S. citizen the right to vote in federal elections starting at age 18, regardless of what a particular state considers the general age of majority. That means someone in Mississippi can vote three years before they're legally considered an adult under state law.
This is useful for high school seniors planning ahead, or anyone whose birthday falls near a milestone they want to track precisely. Check the FAQ below for state-by-state exceptions and why voting age and the age of majority aren't always the same number.
Frequently Asked Questions
Most states set the age of majority at 18, but there are exceptions: Alabama and Nebraska set it at 19, and Mississippi sets it at 21. Always confirm your specific state's law, since some rights (like purchasing alcohol) have separate age rules regardless of the age of majority.
The 26th Amendment to the U.S. Constitution guarantees the right to vote at age 18 for federal elections nationwide, overriding any state's general age of majority. So even in Mississippi, where you're a legal minor until 21, you can still vote at 18.