# Clock to seconds converter

## World's simplest time tool

With this browser-based application, you can convert clock time provided in hours, minutes, and seconds into just seconds. Given a time in HH:MM:SS format, it calculates HH*3600 + MM*60 + SS and prints this value in the output box. It supports AM/PM time formats as well as clock times beyond 24 hours. Created by computer nerds from team Browserling.

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Clock to seconds converter tool
What is a clock to seconds converter?

This is a quick online utility for calculating how many seconds there are in the given time. When you input a full clock time in the input box (in format H:M:S), it gets split into hours, minutes, and seconds, and using the math formula hours×60×60 plus minutes×60 plus seconds, it finds the seconds. If seconds are missing (format is H:M), then the formula becomes hours×60×60 plus minutes×60. If minutes are also missing, then the formula becomes hours×60×60. As an extra feature, hours, minutes, and seconds aren't limited to just 24 hours, 60 minutes, and 60 seconds. You can use any hours value, any minutes value, and any seconds value. For example, the input time "72:00:00" will find the number of seconds in three days (72 hours is 3×24 hours) and the input time "0:1000:0" will find seconds in 1000 minutes. Timeabulous!

Clock to seconds converter examples
Click to use

Multiple Clock Times

In this example, we convert multiple clock times to seconds. Each clock time is listed on a new line and the spacing between input times is preserved in the output.

00:00:00
00:00:01
00:01:00
01:00:00
01:59:59
12:00:00
18:30:30
23:59:59
24:00:00

0
1
60
3600
7199
43200
66630
86399
86400

Partial Clock Times

This example finds how many seconds there are in clock times that are partially written. Some of the clock times contain just the hours and some others contain just hours and minutes.

1am
1:10 a.m.
14:44
11pm
23

3600
4200
53040
82800
82800

Time Beyond 24 Hours

In this example, we go beyond the regular 24-hour clock. In fact, we even go beyond 60 minutes and 60 seconds.

24:00:01
48:00:00
72
00:100:00
100:100:100

86401
172800
259200
6000
366100

Pro tips
Master online time tools

You can pass input to this tool via

__?input__query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinetimetools.com/convert-time-to-seconds

__?input__=00%3A00%3A00%0A%0A00%3A00%3A01%0A00%3A01%3A00%0A01%3A00%3A00%0A01%3A59%3A59%0A12%3A00%3A00%0A18%3A30%3A30%0A23%3A59%3A59%0A%0A24%3A00%3A00
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Draw an analog or digital clock.

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Draw a daily, monthly, or yearly calendar.

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Calculate how many seconds have passed since midnight.

Calculate Seconds Till Midnight

Calculate how many seconds are left till midnight.

Reverse Clock Time

Find the reverse of the given clock time.

Invert Clock Time

Find the inverse of the given clock time.

Truncate Clock Time

Drop seconds, minutes or hours from the given clock time.

Round Clock Time

Round the given clock time up or down.

Increment Clock Time

Add hours, minutes, and seconds to the given time.

Decrement Clock Time

Subtract hours, minutes, and seconds from the given time.

Increment Calendar Dates

Add days, months, and years to the given date.

Decrement Calendar Dates

Subtract days, months, and years from the given date.

Split Time Into Intervals

Split the given time into multiple intervals.

Generate Time Intervals

Generate a list of equal or unequal time intervals.

Convert Seconds To Minutes

Find how many minutes are in the given seconds.

Convert Seconds To Hours

Find how many hours are in the given seconds.

Convert Seconds to Days

Find how many days are in the given seconds.

Convert Seconds to Weeks

Find how many weeks are in the given seconds.

Convert Seconds to Months

Find how many months are in the given seconds.

Convert Seconds to Years

Find how many years are in the given seconds.

Convert Minutes to Seconds

Find how many seconds are in the given minutes.

Convert Minutes To Hours

Find how many hours are in the given minutes.

Convert Minutes to Days

Find how many days are in the given minutes.

Convert Minutes to Weeks

Find how many weeks are in the given minutes.

Convert Minutes to Months

Find how many months are in the given minutes.

Convert Minutes to Years

Find how many years are in the given minutes.

Convert Hours To Seconds

Find how many seconds are in the given hours.

Convert Hours to Minutes

Find how many minutes are in the given hours.

Convert Hours to Weeks

Find how many weeks are in the given hours.

Convert Hours to Months

Find how many months are in the given hours.

Convert Hours to Years

Find how many years are in the given hours.

Convert Days to Seconds

Find how many seconds are in the given days.

Convert Days to Minutes

Find how many minutes are in the given days.

Convert Days to Weeks

Find how many weeks are in the given days.

Convert Days to Months

Find how many months are in the given days.

Convert Days to Years

Find how many years are in the given days.

Convert Weeks to Seconds

Find how many seconds are in the given weeks.

Convert Weeks To Minutes

Find how many minutes are in the given weeks.

Convert Weeks To Hours

Find how many hours are in the given weeks.

Convert Weeks to Days

Find how many days are in the given weeks.

Convert Weeks to Months

Find how many months are in the given weeks.

Convert Weeks to Years

Find how many years are in the given weeks.

Convert Months to Seconds

Find how many seconds are in the given months.

Convert Months To Minutes

Find how many minutes are in the given months.

Convert Months To Hours

Find how many hours are in the given months.

Convert Months to Days

Find how many days are in the given months.

Convert Months to Weeks

Find how many weeks are in the given months.

Convert Months to Years

Find how many years are in the given months.

Convert Years to Seconds

Find how many seconds are in the given years.

Convert Years To Minutes

Find how many minutes are in the given years.

Convert Years To Hours

Find how many hours are in the given years.

Convert Years to Days

Find how many days are in the given years.

Convert Years to Weeks

Find how many weeks are in the given years.

Convert Years to Months

Find how many months are in the given years.

Find Leap Years

Print a list of all leap years.

Find Common Years

Print a list of all common years.

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Find how old a human would be if he/she was a cat.

Convert a Human's Age to Cat Years

Find how old a cat would be if it was a human.

Convert a Dog's Age to Human Years

Find how old a human would be if he/she was a dog.

Convert a Human's Age to Dog Years

Find how old a dog would be if it was a human.

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Convert clock time on Earth to clock time on Mars.

Convert Mars Time to Earth Time

Convert clock time on Mars to clock time on Earth.

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