Seconds to Hours Converter

Common questions

How many seconds are in an hour?

3,600. An hour of 60 minutes, each of 60 seconds, is 60 × 60 = 3,600 seconds, so one hour is 3,600 s, two hours are 7,200 s and a day of 24 hours is 86,400 s. Dividing by that figure is the whole conversion: 1,800 seconds comes back as 0.5 hours, 5,400 seconds as 1.5 hours, 36,000 seconds as 10 hours and 45,000 seconds as 12.5 hours.

What is the difference between seconds to minutes and seconds to hours?

The number you divide by: 60 for minutes, 3,600 for hours. It is the easiest slip to make here, because 300 seconds is 5 minutes but only 0.0833333333333 hours, and 90 seconds is 1.5 minutes but 0.025 hours. Both answers sit on the page at once: the headline gives the hours, and the list underneath gives the same seconds in minutes, so you can read one against the other without changing the units.

Worked example: how many hours is 5,000 seconds?

5,000 / 3,600 = 1.38888888889 hours, which is what the page prints as you type. To read that as clock time, keep the 1 whole hour, which accounts for 3,600 seconds, and leave 1,400 seconds: 23 minutes and 20 seconds. So 5,000 seconds is 1 hour, 23 minutes and 20 seconds. The list under the answer agrees, showing the same 5,000 seconds as 83.3333333333 minutes.

How do I convert hours back to seconds?

Multiply by 3,600, or press the swap button between the two boxes and the page becomes hours to seconds: 1 hour gives 3,600, half an hour gives 1,800, 2 hours give 7,200 and 24 hours give 86,400. Both unit menus stay open as well, so the same number will go from seconds to minutes, days, weeks or years without leaving the page, and Copy result copies the figure exactly as printed, without the thousands separators.

How do I turn the decimal into hours and minutes?

Multiply whatever follows the decimal point by 60. 50,000 seconds is 13.8888888889 hours, and 0.8888888889 × 60 is 53.33 minutes, so that span reads as 13 hours, 53 minutes and 20 seconds. The list under the headline shows the same 50,000 seconds as 833.333333333 minutes if you would rather work from there, and every row has its own Copy button.

How do I turn a gap between two timestamps into hours?

Subtract the earlier Unix timestamp from the later one, which leaves a plain count of seconds, and type that difference into the From box. A gap of 1,234,567 seconds is 342.935277778 hours, which is 342 hours, 56 minutes and 7 seconds, and a gap of 100,000 seconds is 27.7777777778 hours. Thousands separators are fine, so 1,234,567 and 1234567 are read the same way. If your figures are in milliseconds, pick Millisecond in the From menu rather than dividing by 1,000 first, and the epoch converter turns the timestamps themselves into readable dates.

Is an hour here ever something other than 3,600 seconds?

No. The converter holds a fixed factor for each unit and has no calendar and no time zone, so an hour is always 3,600 seconds. Real clock time is less tidy: a UTC day that carries a leap second runs 86,401 seconds, which this page reports as 24.0002777778 hours rather than 24, while a local day on which the clocks go forward or back runs 82,800 or 90,000 seconds, which come back as exactly 23 and 25 hours. When the two ends are real dates and times, the duration calculator counts between them on the calendar instead.

What else does the page show under the answer?

The same span in every common time unit, each with its own Copy button. Type 10,000 in the From box and the headline reads 2.77777777778 hours, and the list underneath repeats that figure beside 10,000,000 ms, 166.666666667 min, 0.115740740741 d, 0.0165343915344 wk and 0.00031688087814 Julian years. The Uncommon units switch in the row above adds 2 more, the nanosecond and the microsecond.

Is a year in that list 365 days?

No, it is the Julian year of 31,557,600 seconds, which is exactly 365.25 days, or 8,766 hours. A common calendar year of 365 days is 31,536,000 seconds and 8,760 hours, and a leap year of 366 days is 31,622,400 seconds. The converter cannot tell which one you mean, because it holds factors rather than a calendar: type 31,536,000 seconds and it returns 8,760 hours exactly.

Why does the page open on seconds and hours when I last converted something else?

Because a page that names a pair should show that pair. This one sets seconds and hours on arrival, ahead of whatever the converter last remembered, and it leaves the main unit converter's own memory alone: go back there and it is still on the pair you left it on. The number you last typed does travel with you, since it is usually the one you are still working on.

Is anything I type sent anywhere?

No. The conversion is arithmetic against a table of factors that ships with the page, so it runs in your browser with nothing uploaded and no account, and it keeps working with no network connection once the page has loaded.