Birthday Calculator

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Age Calculator Age Difference Birthday Calculator Generations

Result

Enter your details above and click Calculate to see your results.

Calculators

Discover weekday born, star sign, Chinese zodiac, birthstone, and days until your next birthday. Count months, weeks, and days you have lived.

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Enter your birth date to see the weekday you were born, Western star sign, Chinese zodiac animal, traditional birthstone, and a countdown to your next birthday.

How to use this birthday calculator

  1. Enter your birth date (month, day, year).
  2. Click Calculate.
  3. Review weekday born, star sign, Chinese zodiac, birthstone, next birthday date, and how long you have lived.

For full age in years and months on any date, use the Age Calculator. To compare two birthdays, try the Age Difference Calculator.

What does this birthday calculator show?

People look up more than just their age when they type in a birth date. This tool pulls together the calendar facts people ask about most:

  • Weekday born: Monday, Tuesday, etc.
  • Star sign: Western zodiac sun sign from your birth month and day
  • Chinese zodiac: animal sign from your birth year
  • Birthstone: traditional stone for your birth month
  • Next birthday: date and days remaining
  • Time lived: months, weeks, and days so far

Leap-day birthdays

Born on 29 February? In years without a leap day, the countdown to your next birthday uses 28 February instead, since the 29th simply does not exist that year. It is the standard way to handle leap-day birthdays.

Star sign vs Chinese zodiac

A Western star sign comes from where your birth month and day fall in the solar year. The Chinese zodiac runs on the lunar calendar instead, and the animal typically flips over in late January or February. This calculator sticks with birth year for the animal sign, the same shortcut most quick-reference tools use.

Examples and use cases

Worked example

Birth date 15 July 1995 (a Saturday):

  • Star sign: Cancer (June 21 to July 22)
  • Chinese zodiac: Pig (1995)
  • Birthstone: Ruby

Real-world use cases

  • Party planning: Someone checks how many days until a milestone birthday to send invitations and book a venue.
  • Genealogy curiosity: A family historian notes the weekday and zodiac for each ancestor’s birth date in a shared tree.
  • Gift ideas: A friend looks up birthstone and star sign before choosing jewelry or a themed birthday card.

Common questions

Quick answers before you start calculating.

The day of the week you were born, your Western star sign, Chinese zodiac animal, birthstone, days remaining until your next birthday, and how long you have been alive in months, weeks, and days.