Date and calendar tools

Simple, fast calculators with the federal holidays in the United States built in.

• Vacation planner The best days to take off around holidays for the longest breaks.
• Moon phase today The Moon right now, how much of it is lit and the next phases.
• Moon phases calendar Every Moon phase of the year, month by month, with supermoons.
• Business days calculator Count business days between dates or add them to a date, with holidays.
• Age calculator Exact age in years, months and days, and the countdown to your birthday.
• Hours calculator Add and subtract hours and get the time between two clock times.
• Countdown How many days until holidays, dates and events.
• Date difference Days, weeks, months and years between two dates.