Date & Time
Compute precise ages, intervals, date differences, and birthday milestones.
All Date & Time (7)
Age Calculator
Calculate exact age in years, months, days, total days lived, and countdown days until your next birthday.
Date Difference Calculator
Calculate the exact duration between two dates in total days, full weeks, months, years, and working business days.
Time Duration Calculator
Calculate exact elapsed hours, minutes, and decimal payroll hours between two times, including overnight spans.
Add / Subtract Days Calculator
Add or subtract days, weeks, months, or years from any date. Computes target calendar day or business day.
Business Days Calculator
Calculate working business days and total working hours between two dates, excluding weekends and custom holidays.
Unix Timestamp Converter
Convert Unix epoch timestamps to UTC, ISO 8601, and local date/time with a real-time live clock ticker.
Time Zone Converter
Convert and compare times across major world time zones with 24-hour timeline scrubbing and business hours badges.