Date and Time Calculators
Browse date and time tools. Each link opens a dedicated calculator with instructions, formulas, examples and related references.
- Age Calculator
Find your age in years, months and days from two calendar dates.
- Date Calculator
Add or subtract days, weeks, months and years from a date.
- Time Calculator
Add and subtract hours and minutes with a clear elapsed-time result.
- Hours Calculator
Calculate elapsed work hours between start and end times, including an unpaid break.
- Time Card Calculator
Total up to five daily clock-in and clock-out shifts, with unpaid breaks.
- Time Zone Calculator
Convert a specific date and time between two IANA time zones, including daylight-saving rules.
- Time Duration Calculator
Find the elapsed duration between two dates and times.
- Day Counter
Count calendar days between two dates, with an optional inclusive count.
- Day of Week Calculator
Find the weekday for any valid calendar date.