Free Age Calculator 2026 — Exact Results in Seconds

Enter your birth date into the calculator above. Age Calculator Plus instantly shows your exact age in years, months, days, hours, minutes, and seconds — updated in real time. 100% free, no sign-up required.

Use our free Baby Age Calculator. Enter your baby's birth date and the tool instantly converts their age into exact weeks, months, and days — perfect for pediatric checkups, milestone tracking, and newborn growth charts. Works for newborns and toddlers. Free, instant, no sign-up required.

In most US states, a child must turn 5 years old by a cutoff date to start kindergarten in fall 2026. The most common cutoff is September 1 — used by Texas, California, Pennsylvania, Georgia, and many others. Some states use different dates (New York uses December 1). See our full guide for all 50 states.

In Pennsylvania, a child must turn 5 on or before September 1, 2026 to enroll in kindergarten for the 2026–27 school year. Children born after September 1, 2021 will typically wait until the 2027–28 school year. See our Pennsylvania kindergarten age guide for full details including exceptions and early enrollment rules.

The September 1 cutoff means your child must turn 5 on or before September 1 of the enrollment year to be eligible for kindergarten that fall. A child born September 2 would need to wait a full year. This rule affects families in Texas, California, Pennsylvania, Georgia, Illinois, and many more states. Read our full September 1 cutoff guide.

US passport age is calculated from your birth certificate date. Key thresholds: under 16 — must use form DS-11, both parents must appear or provide consent. 16–17 — DS-11, parental consent required. 18+ — full adult passport, DS-82 renewal eligible. Use our free passport age calculator for exact eligibility.

If born in 1960 or later, your full Social Security retirement age is 67. You can claim early at 62 (with a permanent reduction) or delay until 70 for maximum benefits. Use our Retirement Age Calculator to see your exact full retirement date, earliest claim date, and maximum benefit date.

If you were born in 2000, you are 25 years old in 2026 (turning 26 if your birthday has not yet occurred this year). Use our Born in 2000 calculator for your exact age in months and days.

Use our free Dog Age Calculator. It uses the accurate scientific formula based on breed size — not the outdated "multiply by 7" myth. A 2-year-old large dog equals roughly 42 in human years. Free, instant, no sign-up.

Born 1940: You are 85 or 86 in 2026 (Silent Generation, Medicare since 2005). Calculate exact age →

Born 1945: You are 80 or 81 in 2026 (Silent Generation's final year — WWII ended). Calculate exact age →

Born 1950: You are 75 or 76 in 2026 (Baby Boomer, Medicare-eligible since 2015). Calculate exact age →