Time Tools

Free Online Time Tools

Convert time zones, calculate dates and ages, run timers, and check the world clock — all free and in your browser.

Most Popular

  • Age Calculator

    Find your exact age in years, months, and days, plus total time lived and a countdown to your next birthday.

  • Coordinate Converter

    Convert latitude and longitude between decimal degrees, DMS, and decimal minutes.

  • Countdown Timer

    Set hours, minutes, and seconds, then start a countdown with a sound alarm and browser notification.

  • Timezone Converter

    Convert any time between the world's time zones and see daylight saving adjustments at a glance.

  • Unix Timestamp Converter

    Instantly convert between Unix epoch time and human dates in seconds or milliseconds, with UTC and local output.

  • World Clock

    See the current local time in cities worldwide at a glance, with time zones, UTC offsets, and day or night.

All Tools by Category

Converters

  • Coordinate Converter

    Convert latitude and longitude between decimal degrees, DMS, and decimal minutes.

  • Timezone Converter

    Convert any time between the world's time zones and see daylight saving adjustments at a glance.

Calculators

  • Age Calculator

    Find your exact age in years, months, and days, plus total time lived and a countdown to your next birthday.

  • Time Calculator

    Add and subtract durations in HH:MM:SS, total hours and minutes, and read the result in decimal hours.

Timers

  • Countdown Timer

    Set hours, minutes, and seconds, then start a countdown with a sound alarm and browser notification.

  • Pomodoro Timer

    Run focused 25-minute work sprints with automatic short and long breaks and a session counter.

Clocks

  • World Clock

    See the current local time in cities worldwide at a glance, with time zones, UTC offsets, and day or night.

Developer

  • Unix Timestamp Converter

    Instantly convert between Unix epoch time and human dates in seconds or milliseconds, with UTC and local output.

About

Time Tools is a free collection of fast, accurate online utilities for everyday time and date tasks. Every tool runs entirely in your browser, needs no download or account, and derives its time-zone and calendar data from your browser's built-in internationalization support.

Whether you are coordinating a meeting across continents, debugging a Unix timestamp, counting the days to a deadline, or focusing with a Pomodoro session, each tool is paired with an in-depth reference guide so you can understand the topic as well as get an instant answer.