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Clock time incrementer

World's simplest time tool

With this browser-based application, you can increment the given clock time by a specific time interval given in hours, minutes, and seconds. When the time is incremented, it can be printed out in a 12-hour format, 24-hour format, text format, or seconds format. You can also control the overflow behavior of the incremented time (when it goes past 23:59:59) in the options. Created by computer nerds from team Browserling.
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Time Increment Interval
Increase the current clock time(s) by this time interval.
Valid interval examples: "4h 50m 20s", "10:05:25", "2 hours 30 minutes", or "1 second".
Output Time Format
Select output time format.
Time Overflow
What to do when time goes past 23:59:59?
See the tool description for full information about these overflow methods.
Clock time incrementer tool What is a clock time incrementer?
This is a quick online utility for adding more time to the given clock time. Adding more time can also be viewed as a time shift operation as the clock is moved forward. For example, if you have a list of planned tasks for the day and now you need to move all the tasks forward by 1 hour, then with this tool, you can instantly increase all the clock times in the tasks list by exactly 1 hour. Similarly, if you need to do a daylight saving adjustment, then you can shift the time forward by exactly 1 hour (if you need to shift time backward, use our clock time decrementer tool). In general, you can adjust the time by any number of hours, minutes, and seconds. The program accepts multiple valid clock times as the input (one per line) and returns modified clock times in the output. Valid input times are for example "10:30", "6am", "02:10pm", or "20:30:59". In the options, valid increment intervals are for example "1 hour", "2m 20s", or "01:01:01" (one hour, one minute, and one second). The updated times can be printed in various formats, which include full digital time "13:05:20", 12-hour time "01:05:20 pm", just seconds: "47120", or spelled time: "13 hours, 5 minutes, 20 seconds". Also, you can control clock time overflows. For example, if you have a late evening time "23:30:00" and you add an hour to it, then it overflows. We added four different ways of handling such overflows. The "Strict Clock Time" overflow method will display a valid clock time "00:30:00". The "Time with Overflow" method will display valid clock time plus the number of days difference between the old and new time "00:30:00 (+1)". The "Non-strict Time" method will keep incrementing hours and will display hours counter beyond 24 hours "24:30:00". And, finally, the "Limit Maximum Time" method will stop at midnight "00:00:00" if the time goes past midnight. Timeabulous!
Clock time incrementer examples Click to use
Increase Time by 50 Seconds
In this example, we write out a list of clock times and increment each one by 50 seconds. We display the updated times in full-digit format HH:MM:SS and use the strict time overflow mode, which controls the clock behavior after time overflows over 23:59:59. In this mode, the clock starts again at 00:00:00.
00:00:00 15:00:30 08:59:10 23:59:20
00:00:50 15:01:20 09:00:00 00:00:10
Required options
These options will be used automatically if you select this example.
Increase the current clock time(s) by this time interval.
Select output time format.
What to do when time goes past 23:59:59?
Increment Time with Overflow
In this example, we add 20 hours, 20 minutes, and 20 seconds to seven different clock times. We use the non-strict adder, which means that the clocks are not limited to 24 hours, but they increase further, up to 36, 39, and 43 hours.
16 18 05:05 09:20 14:59:59 23:00:40 18:39:40
36:20:20 38:20:20 25:25:20 29:40:20 35:20:19 43:21:0 39:0:0
Required options
These options will be used automatically if you select this example.
Increase the current clock time(s) by this time interval.
Select output time format.
What to do when time goes past 23:59:59?
Shift 12-hour Clock Times
This example shifts a bunch of 12-hour clock times forward by 4 hours and 40 minutes. It displays the result in the 12-hour time format and also adds a day counter in parentheses "(+1)" to those lines where the time went beyond the current day (past 24 hours).
3pm 4am 11:40pm 11:50am 08:08:08pm
7:40:0 pm 8:40:0 am 4:20:0 am (+1) 4:30:0 pm 0:48:8 am (+1)
Required options
These options will be used automatically if you select this example.
Increase the current clock time(s) by this time interval.
Select output time format.
What to do when time goes past 23:59:59?
Limit Time to 24:00:00
In this example, we increment four separate times by 01:10:00 (1 hour, 10 minutes, 0 seconds) and disallow the incremented times from exceeding 24:00:00. If a clock reaches midnight, then it stops at 00:00:00 and does not increment anymore.
23:00:00 21:50:50 10:50pm 10pm
00:00:00 23:00:50 00:00:00 23:10:00
Required options
These options will be used automatically if you select this example.
Increase the current clock time(s) by this time interval.
Select output time format.
What to do when time goes past 23:59:59?
Add Time to Five Clocks
In this example, we add 1 hour, 10 minutes, and 10 seconds to five different clocks. We use full text format for the output and spell out all the different clock times.
13:00:10 14:10:20 15:20:30 16:30:40 17:40:50
14 hours, 10 minutes, 20 seconds 15 hours, 20 minutes, 30 seconds 16 hours, 30 minutes, 40 seconds 17 hours, 40 minutes, 50 seconds 18 hours and 51 minutes
Required options
These options will be used automatically if you select this example.
Increase the current clock time(s) by this time interval.
Select output time format.
What to do when time goes past 23:59:59?
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/increment-clock-time?input=00%3A00%3A00%0A15%3A00%3A30%0A08%3A59%3A10%0A23%3A59%3A20&interval=50%20seconds&format=hh-mm-ss&time-overflow=strict-time
All time tools
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Quickly visualize your life in weeks or months.
Quickly print a list of neat-looking clock times (such as 10:11:12).
Quickly print a list of neat-looking calendar dates (such as 2055-05-05).
Quickly convert clock time in H:M:S format to seconds.
Quickly convert seconds to clock time in H:M:S format.
Quickly convert time in 24 hour format to 12 hour format.
Quickly convert time in 12 hour format to 24 hour format.
Quickly find how many seconds have passed since midnight.
Quickly find how many seconds are left till midnight.
Quickly find the difference between two clock times.
Quickly find the difference between two calendar dates.
Quickly find the age difference between two or more people.
Quickly add hours, minutes, and seconds to the given time.
Quickly subtract hours, minutes, and seconds from the given time.
Quickly add days, months, and years to the given date.
Quickly subtract days, months, and years to from the given date.
Quickly change the current time format to any new format.
Quickly change the current date format to any new format.
Quickly round the given clock time up or down.
Quickly round the given calendar date up or down.
Quickly drop seconds and minutes from a clock time.
Quickly drop days and months from a calendar date.
Quickly sort clock times in ascending or descending order.
Quickly sort calendar dates in ascending or descending order.
Quickly check if the given clock time is valid.
Quickly check if the given calendar date is valid.
Quickly find how many hours are in the given days.
Quickly find how many days are in the given hours.
Quickly find the astrological sign by the birthday or any date.
Quickly print a list of the dates of all astrological signs.
Quickly find the average value of multiple clock times.
Quickly find the average value of multiple calendar dates.
Quickly generate a list of random clock times.
Quickly generate a list of random calendar dates.
Quickly create a list of clock times that match your criteria.
Quickly generate a list of calendar dates that match your criteria.
Quickly split the given time period into multiple intervals.
Quickly split the given date period into multiple intervals.
Quickly generate increasing or decreasing clock times.
Quickly generate increasing or decreasing calendar dates.
Quickly print a list of all leap years.
Quickly print a list of all common years.
Quickly test if the given year is a leap year.
Quickly test if the given year is a common year.
Quickly find how old a cat would be if it was a human.
Quickly find how old a human would be if he/she was a cat.
Quickly find how old a dog would be if it was a human.
Quickly find how old a human would be if it was a dog.
Quickly convert a modern Gregorian date to a Julian date.
Quickly convert an ancient Julian date to a Gregorian date.
Quickly calculate the Julian day number for any calendar date.
Quickly convert the Julian day to a regular calendar date.
Quickly print a list of all Easter dates for all years.
Quickly convert a UNIX Epoch time to a human-readable time.
Quickly convert human-readable time to a UNIX Epoch time.
Quickly generate increasing or decreasing UNIX timestamps.
Quickly generate one or more random UNIX Epoch times.
Quickly convert a HH:MM:SS clock to a military HHMM clock.
Quickly convert a military clock HHMM to a HH:MM:SS clock.
Coming soon These time tools are on the way
Draw an Analog Clock
Draw an analog clock that shows particular time.
Draw a Digital Clock
Draw a digital clock that shows particular time.
Animate an Analog Clock
Create a GIF animation of an analog clock.
Animate a Digital Clock
Create a GIF animation of a digital clock.
Draw a Calendar
Draw a daily, monthly, or yearly calendar.
Draw a Lunar Calendar
Draw a calendar that shows moon phases.
Create an Animated Timer
Draw an animation that counts down (or up) time.
Draw an Infinite Spiral Clock
Animate a timeless clock that goes in an infinite spiral.
Draw Time as a Pie Chart
Visualize the given clock time as a pie chart.
Draw Current Year as a Pie Chart
Visualize the current year as a pie chart.
Draw Time as a Bar Chart
Visualize the given clock time as a bar chart.
Draw Current Year as a Bar Chart
Visualize the current year as a bar chart.
Draw a Time Arrow
Visualize the given clock time as an arrow.
Visualize Time Intervals
Draw a visualization of multiple time intervals.
Visualize Time Series
Draw a time series chart.
Find Season by a Date
Print the season (winter, spring, summer, autumn) by a date.
Swap Clock Hands
Swap a clock's hour hand with minute hand.
Reverse Clock Time
Find the reverse of the given clock time.
Invert Clock Time
Find the inverse of the given clock time.
Shift Clock Time
Shift the given clock time by any time interval.
Change Clock Scale
Change the clock scale from 24 hours to any other hours.
Generate Valid Clock Times
Generate a list of valid clock times.
Generate Invalid Clock Times
Generate a list of invalid clock times.
Generate Valid Calendar Dates
Generate a list of valid calendar dates.
Generate Invalid Calendar Dates
Generate a list of invalid calendar dates.
Convert English to Crontab
Create a crontab expression from human language.
Convert Crontab to English
Rewrite a crontab entry into human language.
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 Week of the Year
Given a calendar date, find which week of the year it is.
Find Day of the Year
Given a calendar date, find which day of the year it is.
Find Day of the Week
Given a calendar date, find which day of the week it is.
Convert a Bird's Age to Human Years
Find how old a human would be if he/she was a bird.
Convert a Human's Age to Bird Years
Find how old a bird would be if it was a human.
Convert Earth Time to Mars Time
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.
Generate Palindromic Times
Print a list of symmetric clock times.
Generate Palindromic Dates
Print a list of symmetric calendar dates.
Generate Equal H:M:S Times
Print a list of clock times with hrs equal mins equal secs.
Generate Equal Y-M-D Dates
Print a list of calendar dates with yr equal mon equal day.
Calculate Clock Hand Angle
Find the angle between hour hand and minute hand.
Set Clock Hand Angle
Print a list of all clock times with a specific hand angle.
Set Straight Clock Hands
Print a list of all clock times when hands are in a straight line.
Normalize Clock Times
Given clock times in various formats, convert them to one format.
Normalize Calendar Dates
Given calendar dates in various formats, make them the same format.
Spell Clock Times
Write out clock times in full text format.
Spell Calendar Dates
Write out calendar dates in full text format.
Rotate Clock Times
Cyclically shift HH, MM, SS time parts to the left or right.
Rotate Calendar Dates
Cyclically shift YYYY, MM, DD date parts to the left or right.
Freeform Time Calculator
Perform freeform clock time arithmetics.
Freeform Date Calculator
Perform freeform calendar date arithmetics.
Create Zalgo Time
Generate date and time that only Zalgo can understand.