Luminus

Dates & Time tools

Work out anything involving dates and time: exact age, the difference between two dates, a duration in hours and minutes, business days between deadlines, a live countdown, and conversions across time zones. Useful for planning projects, invoices, events, and coordinating across regions. Every calculation runs in your browser with no account needed.

9 free tools · no sign-up

Exact age in years, months, and days — plus your next birthday.

Dates & Time

Days, weeks, and months between any two dates.

Dates & Time

How long between two times, in hours, minutes, and seconds.

Dates & Time

Count working days between dates, skipping weekends and holidays.

Dates & Time

A live countdown to any date — deadline, launch, or celebration.

Dates & Time

Convert a date and time from one timezone to multiple IANA timezones.

Dates & Time

Convert dates and times to standard ISO, RFC, Local, and Unix Epoch formats.

Dates & Time

Calculate daily/weekly work hours and estimated gross payroll.

Dates & Time

Check timezone overlaps and coordinate best meeting times across cities.

Dates & Time

Why use these dates & time tools?

  • Business-day aware — the workdays tool skips weekends so deadline and delivery estimates are realistic.
  • Precise results: age and date difference break down into years, months, days, and total days, not just a rough number.
  • Time-zone conversion handles offsets so scheduling a call across cities doesn't end in an off-by-an-hour mistake.

Frequently asked questions

Other categories

Was this tool helpful?