when will i turn 21
Turning 21 is not the civil age of majority in Brazil, but it stays relevant in international contexts, especially in the United States. This page calculates the exact date someone turns 21, without repeating the Brazilian civil-majority explanation that belongs to the 18-year page.
Adding 252 months to the birth date does not depend on today's date, so this date stays the same as long as the birth date does not change.
2025 is not a leap year, so the same day adjustment used on the 18-year page repeats here: the date falls on February 28 instead of the 29th, which doesn't exist that year.
For old birth dates, the result marks the milestone as reached and stops counting remaining days, because the target date is decades in the past.
It compares the birth date with a reference date and returns the exact civil age in years, months and days. The same engine also powers days lived, next birthday, age difference and future target age calculations.
Because the 1984 National Minimum Drinking Age Act led all 50 US states to set 21 as the minimum age to buy and consume alcohol, under threat of losing part of their federal highway funding.
Yes. Before the reforms of the 1960s and 1970s, 21 was the age of majority in many Western countries. The United Kingdom, for example, lowered the threshold from 21 to 18 with the Family Law Reform Act 1969.
Yes, the mechanism is identical: months added to the birth date with a day adjustment for shorter target months. Only the number of months added changes, 252 instead of 216, because the target age here is locked at 21.
You will reach that age on March 20, 2029, in 925 days.
You will reach that age on March 20, 2029, in 925 days.
Dates and calculations stay only in your browser.