Alarm Clock
Set alarm clock reminder
Tool Guide
About This Tool
Online Alarm Clock lets you set reminders directly in your browser — no app install needed. Set multiple alarms with custom sounds and get browser notifications even when the tab is in the background.
Core Features
1. Multiple alarms: Set any number of alarms for different times simultaneously.
2. Custom sounds: Choose from built-in alert tones or upload your own audio.
3. Browser notifications: Enable system notifications to receive alerts even when the tab is not in focus.
How to Use
Step 1: Enter the alarm time (HH:MM).
Step 2: Choose the alert sound and repeat settings.
Step 3: Click Set Alarm and keep the tab open.
Use Cases
Work reminders: Set meeting alerts and task deadline reminders so nothing slips through.
Pomodoro: Use as a 25-minute Pomodoro timer to signal break time.
Health habits: Remind yourself to drink water, take medication, or rest.
FAQ
Q: Will the alarm ring if I close the tab?
A: No — alarms run in the browser, so keeping the tab open is required. The alarm stops if the tab is closed.
Q: Why is there no sound?
A: Check that the browser has permission to play audio on this site, and that your system volume is not muted.
Related Tools
BMI Quick Calculator
Calculate BMI
Quick Body Fat Estimator
Calculate body fat percentage based on BMI formula
BMR Calculator
Calculate Basal Metabolic Rate
Daily Water Intake
Free online daily water intake calculator based on your body weight.
Height-to-Weight (BMI) Lookup
Free online tool that calculates a healthy weight range for a given height using the standard BMI formula — instantly see the underweight, normal, and overweight thresholds.
Safe Period Calculator
Free online female safe period and ovulation calculator