🕐 Time & Date Calculators

Time and date calculators for age, days between dates, countdowns, and time zones.

See the current time in major world cities across different timezones simultaneously.

Work Hours Calculator

Calculate daily, weekly, and yearly work hours based on start/end times and lunch break.

Week Number Calculator

Find the ISO week number, year, and day of year for any date.

Unix Timestamp Calculator

Convert Unix timestamps to human-readable UTC, ISO, and local date/time formats.

Timezone Converter

Convert times across UTC offsets and local timezones.

Add Time Calculator

Add seconds, minutes, hours, days, or weeks to any date and time.

Days Between Dates Calculator

Calculate the number of days, weeks, months, and hours between two dates.

Countdown Calculator

Count down days, hours, minutes, and seconds to any target date.

Business Days Calculator

Calculate business days, calendar days, and weekend days between two dates.

Calculate your exact age in years, months, and days, plus days until your next birthday.