Date & Time
Calculate, convert, and plan dates and times across calendars and time zones. Everything stays on your device.
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No sign-up. No installation. Just open and use.
Gregorian ↔ Ethiopian Calendar Converter
Convert dates between Gregorian and Ethiopian calendars.
Open toolExact Age Calculator
Calculate age in years, months, days, and total elapsed units.
Open toolEthiopian Age Calculator
Calculate exact age using Ethiopian calendar dates.
Open toolBirthday Countdown
See the time remaining until the next birthday.
Open toolDate Difference Calculator
Calculate the exact difference between two dates.
Open toolBusiness Days Calculator
Count weekdays between dates with optional exclusions.
Open toolAdd / Subtract Dates
Add or subtract days, weeks, months, or years.
Open toolDay of Week Finder
Find the weekday for any selected date.
Open toolLeap Year Checker
Check Gregorian or Ethiopian leap-year status.
Open toolWeek Number Calculator
Find the ISO week number and week-year.
Open toolTime Zone Converter
Convert dates and times between IANA time zones.
Open toolEthiopian Time Converter
Convert Ethiopian and international clock time.
Open toolUTC ↔ Local Time Converter
Convert UTC to browser-local time and back.
Open tool12-Hour ↔ 24-Hour Converter
Convert between 12-hour and 24-hour clock formats.
Open toolTime Difference Calculator
Calculate the difference between two clock times.
Open toolDuration Calculator
Add, subtract, and normalize durations.
Open toolCountdown Timer
Run a private browser countdown with pause and reset.
Open toolStopwatch
Run a precise browser stopwatch with laps.
Open toolWorld Clock
Display current time in selected cities and zones.
Open toolMeeting Time Finder
Compare working hours across multiple time zones.
Open toolGood to know
Your work remains yours
Toollix tools are designed to process inputs locally in your browser. We do not need an account or a file upload server to help you finish the task.