Time & Date
Time duration converter
Convert any duration between seconds, minutes, hours, days, weeks, months (average), and years (average). Useful when timeline numbers are quoted in inconsistent units.
Seconds
86400
Minutes
1440
Hours
24
Weeks
0.14285714
Months (avg)
0.032854209
Years (avg)
0.0027378508
Formula
Conversions for fixed-length units (s, min, h, d, wk) are exact. Month and year conversions use long-term averages: 1 year = 365.25 days (Gregorian average, accounting for leap years), 1 month = 365.25 / 12 ≈ 30.4375 days. Real months and calendar years differ — for calendar-correct date arithmetic, use the age or days-between-dates calculator.
The converter is useful for: project timelines (hours → weeks), scientific timescales (seconds → years), session durations, video runtimes, downtime totals, and back-of-envelope time-budget checks.
Examples
- 011 day in seconds→ 1 × 86400 = 86,400 s
- 021 year in minutes→ ≈ 525,960 min
- 0310,000 hours in years→ ≈ 1.1408 years (Malcolm Gladwell's expertise threshold)
- 043600 seconds in hours→ 1 hour (exact)
FAQ
- No — they use averages (30.4375 days per month, 365.25 days per year). Real months vary 28-31 days. Real years are 365 or 366. For calendar-exact arithmetic (e.g. 'add 6 months to this date'), use a date library or the days-between-dates calculator.