Date & Time
10 Digital UtilitiesAge calculations, date differences, countdown timers, Unix epoch converters, and working days planners. Private, secure processing with zero permanent file storage.
Date & Time
Date, time, age, and chronology calculators. Calculate exact days between dates, working business days, timezone offsets, and target event countdowns.
Exact Age Calculator
calculatorCalculate your exact age in years, months, days, total hours, minutes, and count down to your next birthday.
Date Difference & Duration Calculator
calculatorCalculate elapsed days, weeks, months, years, and business working days between any two dates.
Business Days & Working Days Calculator
calendarCalculate exact working business days between two calendar dates excluding weekends and custom holidays.
Age, Birthday & Planetary Milestones Calculator
chronologyCalculate precise age in years, months, days, hours, and minutes, plus upcoming birthday countdown and planetary ages.
Working Days & Business Days Calculator
Calculate net working business days between two dates excluding weekends and custom non-working days.
Leap Year Checker & Evaluator
Determine whether any Gregorian calendar year is a leap year with astronomical cycle rules.
Fullscreen Countdown Timer & Stopwatch
timerSet precise digital countdown timers and stopwatches with audio chimes and distraction-free fullscreen mode.
Timezone Converter & Global Meeting Planner
timeCompare times across global timezones and identify overlapping business hours for distributed teams.
Online Stopwatch & Precision Lap Split Timer
productivityAccurate millisecond stopwatch with split lap tracking and lap time analysis.
ISO 8601, Unix Epoch & Human Date Timestamp Converter
converterConvert seamlessly between Unix epoch timestamps (seconds, milliseconds), ISO 8601 UTC strings, and RFC 2822 dates.
Frequently Asked Questions
Does the Date Difference calculator account for leap years?
Yes. All date math strictly follows the Gregorian calendar including leap days and daylight saving time adjustments.
Can I calculate working days excluding weekends?
Yes. The Business Days calculator lets you count exact weekdays between any two calendar dates.
Does the Unix timestamp converter support milliseconds?
Yes, it handles both 10-digit second timestamps and 13-digit millisecond epoch timestamps.