Date & Time Calculators
Free online date & time calculators. 25 tools available.
Age Calculator
Calculate exact age with zodiac and birthday countdown
Date Calculator
Add or subtract days from a date, or find difference
Timezone Converter
Convert times between different timezones
Business Days Calculator
Count business days between two dates
Leap Year Checker
Check if a year is a leap year
Day of Week Calculator
Find what day of the week a date falls on
Week Number Calculator
Find the ISO week number of a date
Time Between Calculator
Calculate time between two dates
Countdown Timer
Set a countdown timer
Pomodoro Timer
Pomodoro technique work timer
World Clock Converter
Compare times across world timezones
Date Format Converter
Convert between date formats
Timezone Offset Calculator
Calculate timezone offsets from UTC
Timezone Meeting Planner
Plan meetings across multiple timezones
Timestamp Converter
Convert Unix timestamps to dates and back
Unix Timestamp
Current Unix timestamp in seconds and milliseconds
Epoch Converter
Convert epoch time to human-readable dates
Date to Unix Timestamp
Convert any date to Unix timestamp
Timestamp to Date
Convert Unix timestamp to readable date
Stopwatch
Online stopwatch with lap times
Duration Calculator
Calculate duration between two times
Time Addition
Add hours and minutes together
Time Subtraction
Subtract time values
Calendar Difference
Calculate calendar differences between dates
Work Hours Calculator
Calculate total work hours between dates
About Date & Time Calculators
Our date & time calculators cover every tool you need. Each calculator is free, instant, and works directly in your browser with no signup required.
Whether you're a professional, student, or just need a quick calculation, our date & time tools provide accurate results using standard formulas and methods.