Dates & Time calculators, in short
Date math breaks at month ends and leap years, so these calculators count in calendar units rather than dividing days by 365. Both also give plain day totals for deadlines and billing.
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What can you calculate here?
- An exact age in years, months, and days, plus the next birthday
- Days, weeks, months, and years between two dates
- A business-day count that excludes weekends and the holidays you list