Time-units converter

This tool treats time as elapsed duration, not as calendar arithmetic. Adding "one month" to a date in software needs calendar-aware logic (the answer for 31 Jan + 1 month is 27 Feb in non-leap years, but elapsed seconds would land you on 2 Mar). The averaged month (~30.44 days) used here is appropriate for capacity planning, log-retention windows, billing-cycle estimates and astronomical contexts — not for absolute date arithmetic.

• 1 day = 86 400 s = 1 440 min = 24 hr
• 1 week = 604 800 s = 168 hr
• 1 year ≈ 31.56 million seconds ≈ 8 766 hours
• 1 µs = 1 000 ns; 1 ms = 1 000 µs; 1 s = 1 000 ms
• 1 day ≈ 86.4 × 10⁹ ns (handy for nanosecond-precision benchmarks)

When to reach for it. Use it to translate between seconds, minutes, hours, days and weeks for scheduling, timeouts and rough planning.

When something else is better. Calendar-aware math (months, leap years, time zones) needs a date tool, not a flat duration convert.

The pitfall to watch. Assuming every month is 30 days, or a year is exactly 365, introduces drift over long spans.

Everything runs on your device. The values you enter are processed locally in this browser tab — EpitomeTool does not send your input to a server, store it, or log it. That means you can use the tool offline once the page has loaded, and refreshing the tab wipes the slate.