About the Seconds to Time Converter
This page converts one length of time between formats. Type a number of seconds and you get it as hours:minutes:seconds, as a sentence such as 1 hour, 2 minutes and 5 seconds, and as decimal minutes, hours and days. Type a time in the other box, such as 1:02:05, 62:05, 1h 2m 5s or 2 days 3 hours, and you get the total seconds. Decimals and milliseconds are supported, and negative values are shown with a minus sign. A day is counted as exactly 86,400 seconds, with no leap seconds or daylight saving, and months and years are not offered because their length varies.
Updated September 2026
How to use the Seconds to Time Converter
- 1To turn seconds into time, type the seconds in the first box.
- 2Read the hh:mm:ss form, the words, and the decimal minutes, hours and days.
- 3To go the other way, type a time such as 1:02:05 or 1h 2m 5s in the second box.
- 4Copy the format you need with its button.
Seconds to hh:mm:ss
To read a big number of seconds as a clock time, divide by 3,600 to find the hours, then take the leftover seconds, divide by 60 for the minutes and keep the remainder as seconds. The tool shows minutes and seconds with two digits and lets the hours grow as large as they need, so 90,061 seconds is 25:01:01 rather than 1 day and a wrapped clock.
The wording line below the answer does spell out days when there are any: 1 day, 1 hour, 1 minute and 1 second.
Turning time into seconds
The reverse is a sum: hours times 3,600, minutes times 60, plus seconds. You can type the time as it is written on a timer, like 62:05, or in words and letters in any order, like 5s 1m or 2 days 3 hours. A bare number is treated as seconds, and a leading minus makes the result negative.
Seconds in common periods
These are the values in the table at the bottom of the tool.
- 1 minute: 60 seconds
- 1 hour: 3,600 seconds
- 1 day: 86,400 seconds
- 1 week: 604,800 seconds
- 30 minutes: 1,800 seconds
Spreadsheets, code and timers
Many systems store durations as plain seconds: video lengths, timeouts, race results and log files. The hh:mm:ss form is easier for people to read, and the decimal form suits spreadsheets that expect fractions of an hour or a day. If you are adding up worked hours across a week, use the Hours Calculator. To time something live, the Stopwatch can help, and the Unix Timestamp Converter changes seconds since 1970 into a calendar date. For other units, try the Unit Converter.
Features
- Seconds to hh:mm:ss with days folded into hours
- A plain-words version with correct singular and plural
- Decimal minutes, hours and days
- Reads 1:02:05, 62:05, 1h 2m 5s, 2 days 3 hours and 1.5 hours
- Decimals and milliseconds
- Negative durations
- Table of common values
- Runs in your browser
Frequently asked questions
How do I convert seconds to hours, minutes and seconds?
Divide the seconds by 3,600 for the hours and keep the whole number. Divide the remainder by 60 for the minutes, and what is left is the seconds. So 3,725 seconds is 1 hour, 2 minutes and 5 seconds, or 1:02:05.
How many seconds are in an hour, a day and a week?
An hour has 3,600 seconds, a day has 86,400 and a week has 604,800. These are exact here because the page counts a day as 24 hours of 3,600 seconds.
How do I convert hh:mm:ss to seconds?
Multiply the hours by 3,600 and the minutes by 60, then add the seconds. 1:02:05 is 3,600 + 120 + 5 = 3,725. Type it into the Time to seconds box and it does the sum, including the two-part form 62:05.
How do I show seconds as “2 hours 5 minutes”?
Type the seconds in the first box and use the Copy words button. The text skips any part that is zero, uses singular for 1, and puts and before the last part, for example 1 day and 1 hour.
Can it handle decimals and milliseconds?
Yes. 3725.5 seconds shows as 1:02:05.5, and the value is rounded to whole milliseconds. In the time box, seconds can have decimals too, such as 1:02:05.125.
Why is there no months option?
A month is 28 to 31 days and a year can have 365 or 366, so there is no single correct number of seconds. Days, hours, minutes and seconds are fixed lengths, so those are the units offered.
What does a time like 1:75 do?
It is rejected, because seconds must be below 60 in M:SS form, and in H:MM:SS both minutes and seconds must be below 60. The page shows a message and asks you to check the entry.