All Free Time Tools

Clocks, calculators and timers for everyday life, school and work. Every tool is free and runs in your browser.

Exact age and next birthday

Date Calculator

Add or subtract dates

Count down to any event

Count weekdays between dates

Find the ISO week number

Epoch time converter

Countdown with sound

25/5 focus cycles

Quiet deep-work timer

Classroom Timer

Fullscreen teacher timer

Reading and test time

Fair student selection

Countdown and cost estimate

Hours Calculator

Time between two times

Weekly work hours

HIIT, Tabata and rounds

High-precision laps

Two-player dual orientation

Any city, side-by-side

Convert between zones

Add minutes/hours

Events & reminders

Lightweight task list

Education Tools

Students and teachers

Offices and remote teams

Sunrise, sunset and moon phase

Islamic Calendar

Hijri date and monthly calendar

Worldwide Holidays

Public holidays by country