Date & Time Calculators
Calculate dates, durations, and time zones.
23 calculators available
Date
Age Calculator
Calculate exact age in years, months, and days from any date.
Date Calculator
Calculate days between dates or add days to a date.
Day Counter
Count days from today to a target date.
Birthday Calculator
Find your birth day, days until next birthday, and age in days.
Date Difference Calculator
Find the number of days, weeks, or months between two dates.
Day of the Week Calculator
Find what day any date falls on.
Weekday Calculator
Find what day of the week any date falls on.
Leap Year Checker
Check if any year is a leap year and find nearby leap years.
Time
Time Calculator
Add or subtract hours, minutes, and seconds.
Hours Calculator
Calculate the number of hours between two times.
Time Card Calculator
Calculate work hours from clock-in and clock-out times.
Military Time Converter
Convert between 12-hour and 24-hour time formats.
Time Zone Converter
Convert times between UTC offsets.
Time Zone Calculator
Convert time between UTC offsets.
Time Addition Calculator
Add or subtract hours and minutes from a given time.
Time Duration Calculator
Calculate duration between two times in hours, minutes, and seconds.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Stopwatch & Timer
Time format converter and duration calculator.
Work & Schedule
Timesheet Calculator
Calculate weekly work hours and pay from daily start/end times.
Work Hours Calculator
Calculate total work hours from clock in/out times.
Overtime Calculator
Calculate overtime pay based on hours and rate.
Pay Period Calculator
Convert between annual salary, monthly, biweekly, weekly, and hourly pay.
Shift Schedule Calculator
Calculate shift patterns, rotations, and average weekly hours.
About Date & Time Calculators
Calculate dates, durations, and time zones. CALTRX provides 23 free date & time calculators with step-by-step explanations, formulas, real-world examples, and expert tips. Every calculator is designed for clarity and accuracy, helping you understand not just the answer but the reasoning behind it.