Time Index

Age Calculator Calculate age in years, months, days, and total elapsed time from a birth date. Age Difference Calculator Compare two dates of birth and calculate exact age difference in calendar units and days. Bearing Compass Heading Compute bearing A to B, track live heading from geolocation API with fallback from previous position, and optionally fuse with device orientation for compass arrow display. Business Day Calculator Add or subtract business days and count business days between two dates. Chrome Timestamp Converter Convert Chrome and WebKit microsecond timestamps to readable dates and back. Clarion Date Converter Convert Clarion date values to calendar dates and calendar dates to Clarion values. Countdown Timer Set a countdown in days, hours, minutes, or seconds with a big live timer board and end-time details. Date Difference Calculate exact and absolute differences between two date and time values. Date Formatter Format date and time using custom token patterns for local or UTC output. Discord Timestamp Converter Generate Discord timestamp tags and decode existing Discord timestamp markup. Dmesg Timestamp Converter Convert Linux dmesg seconds since boot to wall time and convert wall time back to dmesg format. Golden Hour Calculator Calculate sunrise, sunset, and golden hour windows with default GPS location, map pin selection, and day picker. Shows selected day and next day results. Gps Speedometer Live GPS speedometer with car/boat/running modes, average and max speed, acceleration and hard braking detection, plus Kalman and EMA smoothing. JSON Date Converter Convert JSON date notations such as /Date(ms)/, epoch, and ISO datetime values. Ldap Timestamp Converter Convert LDAP and FILETIME timestamp ticks to readable dates and back. Leap Year Calculator Check whether a year is a leap year and return calendar day totals. Mongodb Timestamp Converter Decode MongoDB ObjectId timestamp prefixes and generate ObjectId timestamp prefixes from dates. Ntp Timestamp Converter Convert NTP timestamps from 1900 epoch to date and convert dates to NTP seconds. Pomodoro Timer Run a configurable Pomodoro cycle with focus and break intervals. Retirement Calculator Estimate retirement date by target age and calculate remaining time or elapsed retirement time. Roman Date Converter Convert Gregorian dates to Roman dates, Roman dates to Gregorian, and convert standalone Roman numerals and numbers in both directions. Speed Unit Converter Convert speed units instantly between mph, knots, km/h, m/s, ft/s, and Mach. Built for driving, marine, and running workflows. SQL Timestamp Converter Convert SQL-style timestamps and Unix epochs between readable and numeric formats. Time Unit Converter Convert values across nanoseconds, microseconds, milliseconds, seconds, minutes, hours, days, and weeks. Timezone Converter Convert date and time values between IANA timezones such as UTC and America/New_York. Trip Recorder Record GPS trips in-browser, simplify tracks with Douglas-Peucker, and export with timestamps/metadata as GPX or GeoJSON. Week Number Calculator Calculate ISO week number and ISO week year for a given date. Whats My Timezone Determine timezone from coordinates with fallback to browser timezone. Includes local solar time, sunrise, sunset, and golden hour helper. Windows Timestamp Converter Convert Windows FILETIME timestamps to readable dates and convert dates to FILETIME ticks. Work Hours Calculator Calculate worked hours, break-adjusted totals, overtime, and optional estimated pay.