Time & Date
Plan meetings, convert time zones, and track timers with free tools that live entirely in your browser.
Every tool is free, watermark-free, and runs entirely in your browser—nothing uploads to our servers. If anything needs extra permissions, we call it out right away.
Online Alarm Clock
Set an alarm to ring at a specific time in your browser
Countdown Timer
Count down from any time duration with alerts
Stopwatch
Track time with lap/split functionality
World Clock
View current time in multiple timezones
Timezone Converter
Convert times between different timezones
Date Difference Calculator
Calculate days, months, and years between dates
Age Calculator
Calculate your exact age from birthdate
Add/Subtract Date & Time
Add or subtract days, months, years from a date
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Meeting Time Planner
Find the best meeting time across timezones
Sunrise & Sunset Calculator
Track sunrise and sunset times for any date and location
Moon Phase Calendar
Discover the current moon phase and illumination percentage
ISO Week Number Finder
Look up the ISO week number for any calendar date
Day of Week Calculator
Find the weekday for any date in history or the future
Decimal Hours Converter
Convert decimal hour values into HH:MM format and back again
Pomodoro Timer
Stay productive with a configurable Pomodoro focus timer