Birthday Calculator — Calculate Age & Days Until Birthday

Birthday Calculator

Calculate your exact age in years, months, weeks, and days. Find out how many days until your next birthday and discover interesting facts about your birth date.

Step 1: Birth Date

About Birth Date Calculation

Our calculator accounts for leap years and varying month lengths to give you the most accurate age calculation possible. Time calculations include hours and minutes if provided.

Step 2: Calculation Options

Timezone Consideration

For precise age calculations (down to minutes and seconds), timezone can be important, especially if you were born in a different timezone than your current location.

Age Calculation Results

Age Summary
Next Birthday
Breakdown

Your Exact Age

34 years
Born on January 1, 1990 (34 years, 5 months, 15 days)
Years
34
Months
413
Weeks
1,795
Days
12,570

Next Birthday Countdown

Time Until Your Next Birthday

231 days
Your next birthday is on January 1, 2025
Months
7
Weeks
33
Days
231
Hours
5,544

Birthday Facts

Your next birthday will be on a Wednesday. You share your birthday with approximately 0.3% of the world’s population. Historically, January 1st has been celebrated as New Year’s Day since 45 BCE when Julius Caesar introduced the Julian calendar.

Life Milestones & Breakdown

Age Comparison

Milestone Age Date Reached Days Since/Until

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