Date & Time
Free date calculators for age, days between dates, work hours, and time duration. Add or subtract days, weeks, months from any date.
Free Online Date & Time Calculators
Calculate ages, find the difference between dates, add or subtract time periods, and solve all your date-related questions with our free date and time calculators. Perfect for planning events, calculating deadlines, tracking milestones, and answering 'how many days until' questions.
Why Use Our Date & Time Calculators?
Precise Calculations
Get exact results in years, months, weeks, days, hours, and minutes. Our calculators handle leap years and varying month lengths correctly.
Multiple Formats
View results in the format you need - total days, business days only, or broken down into years, months, and days.
Easy Date Selection
Pick dates from an intuitive calendar interface or type them directly. We support multiple date formats.
Add or Subtract Time
Find out what date it will be in X days, or what date it was X weeks ago. Perfect for deadline planning.
Age Calculator
Calculate exact age in years, months, and days. Great for milestones, legal age verification, or just curiosity.
Countdown Features
See how many days, hours, and minutes until important dates like birthdays, holidays, or events.
How to Use Date & Time Calculators
Choose the calculator that fits your need - age calculator, date difference, add/subtract days, or countdown timer.
Enter the dates using the calendar picker or by typing directly. Most common date formats are supported.
View your results instantly showing the exact time span in multiple units (years, months, days, etc.).
Use additional options like excluding weekends or holidays if calculating business days.
Bookmark your calculation or note down the results for future reference.
Common Use Cases
Birthday & Age Tracking
Calculate exact ages for birthdays, anniversaries, or determine if someone meets age requirements.
Project Planning
Calculate deadlines, determine project duration, or find out how many business days until a milestone.
Event Countdowns
Count down to weddings, vacations, holidays, graduations, or any special occasion.
Historical Dates
Find out how long ago historical events occurred or calculate time spans between historical dates.
Frequently Asked Questions
We calculate the exact number of complete years, then complete months, then remaining days from the birth date to the current date. This accounts for varying month lengths and leap years accurately.