Time & Date Calculators
All Time & Date Calculators
8-Hour Shift Calculator
Calculate start and end times for 8-hour work shifts with break times.
Add Time Calculator
Add or subtract hours, minutes, and seconds with this time calculator.
Age Calculator
Calculate your exact age in years, months, days, hours, and minutes.
Age Difference Calculator
Find the exact age difference between two people or dates.
Anniversary Calculator
Calculate upcoming anniversaries and milestones for any significant date.
Baby Age Calculator
Calculate your baby's age in months, weeks, and days with developmental milestones.
BC to AD Calculator
Convert dates between BC (Before Christ) and AD (Anno Domini) calendar notations.
Birthday Calculator
Calculate days until your next birthday and discover birthday facts and trivia.
Business Days Calculator
Calculate business days between dates or add/subtract business days from a date.
Calendar Calculator
Get date information, perform date math, and analyze date ranges in one tool.
Hours and Minutes Calculator
Convert between hours, minutes, and seconds, and perform time calculations easily.
Korean Age Calculator
Calculate your age according to the Korean age system where you're 1 year old at birth.
Leap Year Calculator
Determine if a year is a leap year and understand the rules of leap years in calendars.
Lunar Age Calculator
Calculate your age according to the traditional lunar calendar system used in East Asia.
Minute Calculator
Convert between different time units and calculate with minutes for precise time management.
Time Card Calculator
Calculate work hours between clock-in and clock-out times, including breaks.
Month Calculator
Analyze calendar months with details on days, start/end days of the week, and seasonal information.
Palindrome Date Finder
Find dates that read the same forwards and backwards in various date formats.
Reverse Time Calculator
Reverse the digits of a time while maintaining valid time format.
Sidereal Time Calculator
Calculate local sidereal time for astronomical observations and stargazing.
Subtract Time Calculator
Calculate the difference between two time periods in hours, minutes, and seconds.