All Categories
Explore our comprehensive collection of date and time utilities organized by category.
Date Difference
Calculate duration between two dates.
Calendar Tools
Generate and customize calendars.
Age Calculators
Calculate exact age in years, months, days.
Birthday & Anniversary
Track special annual events.
Countdown Generators
Count down to important events.
Time Duration
Add or subtract time spans.
Workday & Business
Calculate working days and holidays.
Productivity
Pomodoro and time tracking tools.
Academic Dates
Semester and exam planning.
Event Planning
Plan dates for weddings and parties.
Pregnancy & Health
Due dates and biological cycles.
Financial Dates
Fiscal years and interest periods.
Week & Month
Week numbers and month lengths.
Leap Year
Check for leap years and days.
Time Zones
Convert between world time zones.
Time Formats
Convert ISO, 12h/24h formats.
ISO & Timestamp
Work with ISO 8601 strings.
Unix Time
Epoch and Unix timestamp tools.
Scheduling
Meeting planners and rotas.
Shift & Roster
Manage repeating shift patterns.
Deadlines
Calculate due dates from start.
Holidays
Find public holidays.
Payroll
Salary and pay period calculators.
Project Timeline
Gantt and milestone dates.
Sports Time
Stopwatches and lap timers.
Legal Dates
Contract periods and notices.
Travel Time
Flight durations and jet lag.
International Dates
Date formats across countries.
Time Comparison
Compare times across locations.
Elapsed Time
Measure time passed since an event.
Clock Tools
Analog and digital clock displays.
Reminders
Set alerts for specific times.
School & Exams
Study schedules and term dates.
Subscriptions
Renewal date calculators.
Retirement
Plan your retirement timeline.
Construction
Build timelines and phases.
Historical
Dates in history and old calendars.
Religious
Religious holidays and observances.
Utilities
Misc time tools.
Advanced Math
Complex time algorithms.