Date & Time

Countdown, days between dates, age, add or subtract days, ISO week number and Unix timestamp tools.

• Countdown Calculator: Days Until a DateHow many days until (or since) any date
• Days Between Two DatesTotal days, weeks, months, years and business days
• Age CalculatorExact age in years, months and days, plus next birthday
• Add or Subtract Days from a DateFind the date N days, weeks, months or years away
• Week Number CalculatorISO week number, day of the year, days left in the year
• Unix Timestamp ConverterEpoch seconds or milliseconds to date, and back
• Age on a Specific Date CalculatorHow old you are, or will be, on any date
• Zodiac Sign CalculatorWestern star sign and Chinese zodiac animal
• Leap Year CalculatorCheck any year and list leap years in a range
• Business Days CalculatorWorking days between dates or N business days out
• Shift Schedule CalculatorFind your shift on any date from a rotation pattern
• Time Zone ConverterConvert a time between any two world time zones
• Anniversary CalculatorTime together, day milestones and gift themes
• Age Difference CalculatorExact gap between two birth dates, and who is older
• Online Countdown TimerSet a timer in minutes and seconds, no install
• Pomodoro Timer25 minute focus blocks with short and long breaks