Time & date tools

Calculate an estimated conception date by subtracting a standard pregnancy interval from your due date.

Live countdown timer showing days, hours, minutes, and seconds until the next spring equinox

Live countdown timer showing days, hours, minutes, and seconds until the next summer solstice

Live countdown timer showing days, hours, minutes, and seconds until the next autumn equinox

Live countdown timer showing days, hours, minutes, and seconds until the next winter solstice

Live countdown timer showing days, hours, minutes, and seconds until New Year's Day

Live countdown timer showing days, hours, minutes, and seconds until the next Chinese New Year (Lunar New Year)

Convert Windows FILETIME timestamps (100-nanosecond intervals since January 1, 1601) to human-readable dates and vice versa. Supports LDAP, Active Directory, and NTFS timestamps.

Extract and decode the embedded timestamp from a MongoDB ObjectId to see when a document was created

Extract the creation date and timestamp from Snowflake IDs used by Twitter, Discord, Instagram and other services

Calculate your retirement date and remaining time based on your birth date and target retirement age.

Calculate how many calendar and working days remain until your project deadline. Track progress with start date, end date, and configurable working days.

Convert milliseconds to a human-readable time duration. See the breakdown in days, hours, minutes, seconds, and milliseconds.

Convert any UTC datetime string to local time in any timezone. Paste a UTC timestamp, select your target timezone, and instantly see the converted date and time

Measure the clock offset and round-trip time between your browser and a server using sequential timed requests.

Live countdown to the official Grand Theft Auto VI release date.

Live countdown to the official Call of Duty: Modern Warfare 4 release date.

Visualize your entire life as a grid of blocks, choosing weeks, months, or years per block, with your birthday and notable life events highlighted.

Convert Unix timestamps between seconds, milliseconds, microseconds, and nanoseconds. Detects the unit automatically, keeps full precision for 19-digit values, and shows the date in UTC and local time. Runs in your browser.

See every working day, weekend, and public holiday of a year on one calendar. Pick a country and year to get the number of working days in each month and the whole year, with the weekend days of your choice. Runs in your browser.

Find out which day of the week any date falls on, past or future. See the full date, which weekday of the month it is, its ISO day number and day of the year.

Calculate the difference in time across different timezones.

Convert a date and time in UTC (Etc/UTC) to New York (America/New_York) instantly, starting from the current time, with daylight saving time taken into account.

Convert a date and time in New York (America/New_York) to UTC (Etc/UTC) instantly, starting from the current time, with daylight saving time taken into account.