Free online time tools

Set alarms, run timers, track countdowns and check world clocks
All free, right in your browser.

Set Alarm Create an alarm
in seconds
Start Timer Start a countdown for
any task
Time Converter Convert hours, days
and more.

Popular Timers

1 Minute Start timer
5 Minute Start timer
15 Minute Start timer
30 Minute Start timer
1 Hour Start timer

Explore More Tools

Pomodoro Timer

Stay focused with timed work and break sessions.

Start Pomodoro

Timezone Converter

Convert time between cities and time zones instantly.

Convert Timezones

World Clock

Compare cities and time zones instantly.

View Clocks

Time Calculator

Add or subtract time and calculate durations.

Calculate

Popular Countdowns

Christmas Countdown

See how long until Christmas Day.

View Countdown

Halloween Countdown

Count down to Halloween night.

View Countdown

New Year Countdown

Track the countdown to New Year.

View Countdown

Summer Countdown

See how long until summer begins.

View Countdown

100% free

All tools are completely free to use

No login required

No signup required. No downloads needed

Instant results

Get accurate results
instantly

Works everywhere

Works on desktop, tablet, and mobile devices

Use for:

  • Study sessions & Pomodoro technique
  • Cooking & baking timers
  • Workouts & fitness routines
  • Daily reminders & habits
  • Timezone planning & meetings
  • Event countdowns

Free Online Time Tools | Fast & Simple

AlarmO’Clock gives you everything you need to manage time online.

Set alarms, run countdown timers, stay focused with Pomodoro, convert time between zones, or check the current time anywhere in the world.

No downloads, no sign-ups, and no complicated setup. Just open a tool and get started instantly on desktop, tablet, or mobile.

CalculatorsBox free online calculators for percentages, age, BMI and date calculations.