Best of 2026
Best Free Date Calculators for 2026
Date calculations are deceptively tricky — months have different lengths, leap years add complexity, and business days skip weekends and holidays. Here are the best date calculators that handle all of this automatically.
Our Top Picks
- 1📆
Days Between Dates
Calculate exact days, weeks, and months between any two dates. Shows business days too.
Try it free → - 2💼
Business Days Calculator
Count business days excluding weekends and holidays. Supports US, UK, Canada, and Australia holidays.
Try it free → - 3
- 4⏳
Countdown Calculator
Live countdown to any event with days, hours, minutes, and seconds.
Try it free → - 5🎂
Age Calculator
Calculate exact age in years, months, and days. See days until next birthday.
Try it free →
Pro Tips
- ✓A standard year has 365 days; a leap year has 366 (next leap year: 2028)
- ✓Most months have 4 weeks + 2-3 extra days, so "one month" is not exactly 4 weeks
- ✓Business days vary by country — always specify which holidays to exclude
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