Age Calculator
Free online age calculator. Enter your date of birth to find your exact age in years, months, and days. Plus discover your zodiac sign and countdown to your next birthday.
Date Calculator
Free online date calculator. Instantly calculate the number of days, weeks, months between two dates. Add or subtract days, weeks, months from any date.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and dates to timestamps instantly. See the current Unix epoch time live. Supports seconds and milliseconds. Free online tool.
World Clock
Free online world clock showing current time in major cities worldwide. Check time zones, UTC offsets, and day/night status across all continents in real time.
Countdown Timer
Free online countdown timer. Set any target date and watch the real-time countdown in days, hours, minutes, and seconds. Perfect for events, holidays, and deadlines.
Week Number
Free online week number calculator. Find out what week of the year any date falls on. Supports ISO 8601 week numbering, day of year, and quarter lookup.
Day of Week Calculator
Instantly find the day of the week for any date in history or future. Enter a date and discover if it was a Monday, Friday, or any other weekday.
Business Day Calculator
Calculate the number of business days between two dates or find a future date after adding business days. Automatically excludes weekends.
Timezone Converter
Free Timezone Converter – Convert time between any two timezones instantly. 45+ world timezones with auto-detected local time. Swap timezones with one click.
Online Stopwatch
Free Online Stopwatch – Start, stop, lap, and reset with centisecond precision. Track lap times and find your best split. No download needed.