Seconds to Days Converter
Enter seconds, get days
Seconds → Days quick reference
| Seconds | Days |
|---|---|
| 43,200 | 0.5 |
| 86,400 | 1 |
| 172,800 | 2 |
| 259,200 | 3 |
| 604,800 | 7 |
| 1,209,600 | 14 |
| 2,592,000 | 30 |
| 31,536,000 | 365 |
Rule: divide seconds by 86,400 to get days.
Seconds to days — quick FAQ
What is the formula?
days = seconds ÷ 86,400. One day is 24 hours × 60 minutes × 60 seconds.
Do fractional seconds work?
Yes. For example, 90,000 seconds ÷ 86,400 = 1.041667 days.
Does daylight saving time affect this?
No. This is a pure unit conversion. For real calendar ranges across DST, use the Date Difference Calculator.
Where’s days → seconds?
Use the paired tool: Days to Seconds Converter.
How to convert seconds to days (and when it helps)
Turning seconds into days is a straight division: a civil day contains 86,400 seconds. Divide your second value by 86,400 and you get an exact day count—no guesswork, no special cases. Because units are fixed, the math ignores time zones and seasonal clock changes, which matter for calendar questions but not for pure duration conversion.
The UI is intentionally minimal for speed. You enter a value in seconds, press Convert, and the headline answers in clear language—“129,600 seconds = 1.5 days.” A compact key–value block shows both the input and the output with locale-aware formatting so very large numbers stay readable on a phone. A one-tap copy button gives you a clean summary for chat, tickets, or specs.
Why convert to days? Humans plan in days—deadlines, sprints, vacations, maintenance windows—while systems often describe timing in seconds: API TTLs, cache lifetimes, retry delays, media durations, queue retention. Converting seconds to days helps you sanity-check whether 432,000 seconds is five days, confirm that a license grace period of 172,800 seconds equals two days, or explain an operations policy without making your team do mental arithmetic.
Decimals are supported both ways. Half a day is 43,200 seconds; a quarter day is 21,600 seconds. If your locale uses commas for decimals, you can type 90,000 or 90.000—the input normalizes your typing behind the scenes so you don’t have to think about separators.
Keep unit conversion separate from scheduling. “2.5 days from now” might land at a different local clock time depending on daylight saving changes in your region, but the duration is still 2.5 days. For placing events on specific dates, reach for a date-aware tool. For configuring systems that need durations, this constant factor—86,400 seconds per day—is exactly what you want.
The quick reference table lists common second values and their day equivalents. It acts as a pre-checklist you can scan without typing. For anything else, type the seconds, press convert, copy the result, and move on. The paired Swap Units link jumps to days → seconds in one tap so both directions are always nearby.
Design-wise, this page matches the rest of our Time & Date tools: a single job, clear hierarchy, keyboard-friendly controls, and copyable results. Everything runs locally in your browser—no tracking, no server roundtrips—so it’s private, fast, and resilient on spotty networks.
In short, when someone asks “how many days is that?”, paste the seconds, hit convert, and share the summary. It’s precise, predictable, and easy to reuse wherever days communicate better than raw seconds.