Birthday Calculator
Free Birthday Calculator to find days until your next birthday, day of the week you were born, zodiac sign, birthstone, and milestone birthdays. Plan your.
Total Days
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Total Weeks
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Weekdays
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Years / Months / Days
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Add/Subtract Result
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Base Date
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Days Added
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Result Date
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Business Days
0
Start Date
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End Date
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Next Birthday
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Days Until
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Your Age
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Next Anniversary
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Years Together
0
Estimated Due Date
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1st Trimester Ends
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2nd Trimester Ends
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3rd Trimester Starts
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Cycle Length
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Retirement Date
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Time Remaining
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Days
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Hours
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Minutes
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Seconds
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Target:
Key Features
Count days until your next birthday
Discover what day of the week you were born
Find your zodiac sign and birthstone
Plan for upcoming milestone birthdays
Learn fun facts about your birthday
How to Use This Calculator
How to Use This Calculator
Select your birth date using the day, month, and year dropdowns
Optionally select a different current date using the dropdowns (default is today)
If you know your birth time, check "Include Time" and select hour and minute
Click "Calculate Birthday Info" to see your results
View days until your next birthday, birth information, and milestone birthdays
Share your results with friends and family
Frequently Asked Questions
How do I calculate the difference between two dates?
Can I add or subtract time from a date?
What is business days calculation?
Are leap years accounted for?
Is this date calculator free to use?
Related Tools
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Calculate exact age in years, months, and days.
Date Calculator
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Time Calculator
Add or subtract hours, minutes, and seconds.
Add/Subtract Date
Add or subtract days, weeks, months to a date.
Business Days
Calculate working days between two dates.
Add Business Days
Add business days to a date.