With this browser-based application, you can round a calendar date up, down, or to the next nearest date. You can adjust the rounding precision in the options and round the date to a day, month, quarter, year, ten years, and century. You can quickly switch between the three rounding methods and instantly get the rounded date in the output. Created by computer nerds from team Browserling.
With this browser-based application, you can round a calendar date up, down, or to the next nearest date. You can adjust the rounding precision in the options and round the date to a day, month, quarter, year, ten years, and century. You can quickly switch between the three rounding methods and instantly get the rounded date in the output. Created by computer nerds from team Browserling.
This is a quick online utility for rounding calendar dates. It can round any date to any precision up, down, or to the closest date. When a date is rounded, the least significant date components are set to the smallest possible value (zero for hours/minutes/seconds and one for years/months/days). For example, if the date "2022-05-21 14:23:58" is rounded down to days, then the hours, minutes, and seconds components turn into zeros "2022-05-21 00:00:00". Similarly, when this same date is rounded down to months, we get "2022-05-01 00:00:00", to quarters: "2022-04-01 00:00:00", to years: "2022-01-01 00:00:00", to decades (tens of years): "2020-01-01 00:00:00", and to centuries: "2000-01-01 00:00:00". You can also round time part of a date to an hour, 30 minutes, 15 minutes, 10 minutes, 5 minutes, 1 minute, 30 seconds, 10 seconds, and 5 seconds. In the options, you can switch between three rounding methods: "Round a Date Up", "Round a Date Down", and "Round Date to Nearest". Rounding up increases the date components towards the next largest day/month/year/century. For example, the date "2022-05-21 14:23:58" will become "2022-06-01 00:00:00" when rounding the months up. Rounding down decreases the date components to the beginning of the smallest day/month/year/century. For example, when rounding the date "2022-05-21 14:23:58" down to months, we get "2022-05-01 00:00:00". Rounding to the nearest date determines on its own whether to increase or decrease the date. For example, when rounding the date "2022-05-21 14:23:58" to the nearest day, it becomes "2022-06-01 00:00:00" (because it's 10 days from June and 21 from May), and the date "2022-05-03 14:23:58" becomes "2022-05-01 00:00:00" (because it's 3 days from May and 28 days from June). You can round as many dates as you want at the same time if you enter them one per line to the input. The rounding results can be copied or saved from the output field. Timeabulous!
This is a quick online utility for rounding calendar dates. It can round any date to any precision up, down, or to the closest date. When a date is rounded, the least significant date components are set to the smallest possible value (zero for hours/minutes/seconds and one for years/months/days). For example, if the date "2022-05-21 14:23:58" is rounded down to days, then the hours, minutes, and seconds components turn into zeros "2022-05-21 00:00:00". Similarly, when this same date is rounded down to months, we get "2022-05-01 00:00:00", to quarters: "2022-04-01 00:00:00", to years: "2022-01-01 00:00:00", to decades (tens of years): "2020-01-01 00:00:00", and to centuries: "2000-01-01 00:00:00". You can also round time part of a date to an hour, 30 minutes, 15 minutes, 10 minutes, 5 minutes, 1 minute, 30 seconds, 10 seconds, and 5 seconds. In the options, you can switch between three rounding methods: "Round a Date Up", "Round a Date Down", and "Round Date to Nearest". Rounding up increases the date components towards the next largest day/month/year/century. For example, the date "2022-05-21 14:23:58" will become "2022-06-01 00:00:00" when rounding the months up. Rounding down decreases the date components to the beginning of the smallest day/month/year/century. For example, when rounding the date "2022-05-21 14:23:58" down to months, we get "2022-05-01 00:00:00". Rounding to the nearest date determines on its own whether to increase or decrease the date. For example, when rounding the date "2022-05-21 14:23:58" to the nearest day, it becomes "2022-06-01 00:00:00" (because it's 10 days from June and 21 from May), and the date "2022-05-03 14:23:58" becomes "2022-05-01 00:00:00" (because it's 3 days from May and 28 days from June). You can round as many dates as you want at the same time if you enter them one per line to the input. The rounding results can be copied or saved from the output field. Timeabulous!
In this example, we round up three calendar dates with a precision of one day. Every date that has a clock time part greater than midnight turns into the start of the next day. If the clock time is exactly midnight, then the time is already rounded to a day and doesn't change.
This example sets each date to the beginning of the month. Here the rounding algorithm uses the "Round a Date Down" mode with a precision of 1 month. As a result, all calendar days are set to "01" and the time is reset to 00:00:00.
In this example, we use our date rounding program to guess the middle of a leap year and a common year. We set the options to round the given dates to the closest year and enter several leap years (2024) and several common years (2025) in the input that have a difference of 1 second. We can see that the middle of a leap year falls on the midnight of July 2nd (on 2024-07-02 00:00:00) and the middle of a regular year falls on the noon of July 2nd (2025-07-02 12:00:00).
In this example, we are working with a quarterly financial report for q2, 2022. As all dates fit in the interval 2022-04-01 to 2022-07-01, we round them down to the q2 start date. This way all output dates start on the first day on q2, 2022, which is "2022-04-01".
In this example, we round up three different dates to the next decade. After rounding, the months and days are set to the beginning of the year (January 1) and the time is reset to midnight. The year is turned into the next largest year divisible by ten. As a result, the first year is rounded to 2030, the second to 2040, and the third to 2050.
In this example, we load a list of random dates from 2000 to 2100 and we want to determine which century each date is closest to. To find the answer, we select the century round precision and switch to the nearest rounding mode. As soon as we do that, we get the answer to our question and all dates are shifted back either to 2000 (if they are closer to 2000) or shifted forward to 2100 (if they are closer to 2100).
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!
Draw a binary clock that shows time in base two.
Draw a clock in Salvador Dali style showing custom time.
Draw a weird-looking clock that shows a particular time.
Draw a π clock with π hours in a day.
Draw a 360° clock with 360 degrees in a day.
Create a GIF animation of an analog clock.
Create a GIF animation of a digital clock.
Create a GIF animation of a clock that's broken.
Draw a daily calendar for a single day.
Draw a weekly calendar for any week of the month.
Draw a yearly calendar for the entire year.
Draw a calendar that shows moon phases.
Draw a calendar that shows the seasons and Sun's position.
Draw a calendar that shows when the Sun rises and sets.
Draw a calendar that shows when the Moon rises and sets.
Draw an animation that counts down (or up) time.
Create a GIF animation of a sand clock.
Animate a timeless clock that goes in an infinite spiral.
Visualize the given clock time as a pie chart.
Visualize the current year as a pie chart.
Visualize the given clock time as a bar chart.
Visualize the current year as a bar chart.
Visualize the given clock time as a pixel wall (1px = 1sec).
Visualize the current year as a pixel wall (1px = 1day).
Visualize the given clock time as bubbles.
Visualize the current year as bubbles.
Visualize the given clock time as an arrow.
Quickly calculate time passed and left in the current day as pct.
Quickly calculate time passed and left in the current year as pct.
Convert regular clock time to binary clock time (bintime).
Quickly regular calendar date to binary date (bindate).
Convert regular clock time to decimal clock time (dectime).
Quickly regular calendar date to decimal date (decdate).
Convert regular clock time to hexadecimal time (hextime).
Quickly regular calendar date to hexadecimal date (hexdate).
Create a GIF animation of the Moon for a particular month.
Create an animation of the Moon orbiting the Earth.
Create a 88 day animation of the Mercury orbiting the Sun.
Create a 225 day animation of the Venus orbiting the Sun.
Create a 365 day animation of the Earth orbiting the Sun.
Create a 687 day animation of the Mars orbiting the Sun.
Create a 4,330 day animation of the Jupiter orbiting the Sun.
Create a 10,756 day animation of the Saturn orbiting the Sun.
Create a 30,687 day animation of the Uranus orbiting the Sun.
Create a 60,190 day animation of the Neptune orbiting the Sun.
Create a 90,560 day animation of the Pluto orbiting the Sun.
Create an animation of all planets in the Solar System.
Create an animation of Phobos and Deimos orbiting Mars.
Animate Io, Europa, Ganymede, Callisto orbiting Jupiter.
Animate Titan, Rhea, Iapetus, Enceladus orbiting Saturn.
Animate Titania, Oberon, Umbriel, Ariel, Miranda orbiting Uranus.
Animate Triton, Nereid, and Proteus orbiting Neptune.
Animate Charon, Nix, Hydra, Kerberos, Styx orbiting Pluto.
Find dates when two or more planets align in a straight line.
Find dates when the solar eclipse happens.
Find dates when the lunar eclipse happens.
Calculate your age based on the orbital period of other planets.
Represent a clock time as a matrix.
Represent a calendar date as a matrix.
Represent a clock time as a vector.
Represent a calendar date as a vector.
Draw a time series chart.
Given a bunch of time intervals, find overlapping intervals.
Generate a bunch of overlapping time intervals.
Generate a bunch of non-overlapping time intervals.
Generate random clock time intervals.
Given a bunch of date intervals, find overlapping intervals.
Generate a bunch of overlapping date intervals.
Generate a bunch of non-overlapping date intervals.
Generate random calendar date intervals.
Swap a clock's hour hand with minute hand.
Find the reverse of the given clock time.
Find the inverse of the given clock time.
Shift the given clock time by any time interval.
Change the clock scale from 24 hours to any other hours.
Generate a list of valid clock times (for testing).
Generate a list of invalid clock times (for testing).
Generate a list of valid calendar dates (for testing).
Generate a list of invalid calendar dates (for testing).
Create errors in the given clock times (for testing).
Create errors in the given calendar dates (for testing).
Convert a calendar date to seconds.
Convert seconds to a calendar date.
Create a crontab expression from human language.
Rewrite a crontab entry into human language.
Quickly find the week of the month of a calendar date.
Quickly find how many days have passed since start of the year.
Quickly find how many days are left till the end of the year.
Quickly find how many days are left till a specific date.
Find how many minutes are in the given seconds.
Find how many hours are in the given seconds.
Find how many days are in the given seconds.
Find how many weeks are in the given seconds.
Find how many months are in the given seconds.
Find how many years are in the given seconds.
Find how many seconds are in the given minutes.
Find how many hours are in the given minutes.
Find how many days are in the given minutes.
Find how many weeks are in the given minutes.
Find how many months are in the given minutes.
Find how many years are in the given minutes.
Find how many seconds are in the given hours.
Find how many minutes are in the given hours.
Find how many weeks are in the given hours.
Find how many months are in the given hours.
Find how many years are in the given hours.
Find how many seconds are in the given days.
Find how many minutes are in the given days.
Find how many weeks are in the given days.
Find how many months are in the given days.
Find how many years are in the given days.
Find how many seconds are in the given weeks.
Find how many minutes are in the given weeks.
Find how many hours are in the given weeks.
Find how many days are in the given weeks.
Find how many months are in the given weeks.
Find how many years are in the given weeks.
Find how many seconds are in the given months.
Find how many minutes are in the given months.
Find how many hours are in the given months.
Find how many days are in the given months.
Find how many weeks are in the given months.
Find how many years are in the given months.
Find how many seconds are in the given years.
Find how many minutes are in the given years.
Find how many hours are in the given years.
Find how many days are in the given years.
Find how many weeks are in the given years.
Find how many months are in the given years.
Find how old a human would be if he/she was a bird.
Find how old a bird would be if it was a human.
Convert clock time on Earth to clock time on Mars.
Convert clock time on Mars to clock time on Earth.
Convert Earth time to Star Trek's stardate.
Convert Star Trek's stardate to Earth time.
Print a list of clock times with hours equal mins equal secs.
Print a list of calendar dates with years equal months equal days.
Print a list of all clock times when hands are in a straight line.
Given clock times in various formats, convert them to one format.
Given calendar dates in various formats, make them the same format.
Cyclically shift HH, MM, SS time parts to the left or right.
Cyclically shift YYYY, MM, DD date parts to the left or right.
Perform freeform clock time arithmetics.
Perform freeform calendar date arithmetics.
Find the sum of hours plus minutes plus seconds.
Find the sum of years plus months plus days.
Find clock hand position so that hr + min + sec equals your value.
Find calendar date so that year + months + day equals your value.
Print all clock icons from 00:00 to 24:00.
Generate date and time that only Zalgo can understand.
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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling our mission is to make people's lives easier, so we created this collection of time and date tools. All our tools share the same user interface, so as soon as you learn how to use one of the tools, you'll be a master of all tools. Behind the scenes, our time and date tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!
