UD5 Toolkit
Sunrise Alarm Simulator β Online Gradual Light WakeβUp
Set a wake-up time and the screen gradually brightens from dark to warm yellow. Use as a gentle alarm.
No alarm set
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Set Your Alarm
Classic
Digital
Melodic
Buzzer
Frequently Asked Questions
How does the online alarm clock work?
Our online alarm clock uses your device's local time and plays a sound through your browser when the set time is reached. Simply choose your alarm time, pick a ringtone, and click "Set Alarm." Keep the browser tab open for the alarm to trigger. You can use the snooze function to delay the alarm by 9 minutes.
Will the alarm work if my computer is locked or in sleep mode?
No. The alarm requires your browser tab to remain open and your device to stay awake. If your computer enters sleep mode or the browser tab is closed, the alarm will not sound. We recommend keeping your device awake and the tab active for reliable alarm functionality.
Do I need to allow sound permissions?
Modern browsers may require a user interaction (like clicking a button) before playing audio. When you click "Set Alarm" or "Test Sound," this grants the necessary audio permission. If the alarm fails to produce sound, try interacting with the page first.
Can I use this alarm clock on my mobile phone?
Absolutely! This alarm clock is fully responsive and works on all modern smartphones and tablets. For best results, keep the browser tab open and your phone's screen on. You can also add this page to your home screen for quick access.
What ringtones are available?
We offer four distinct ringtone styles: Classic (traditional alarm beep), Digital (fast electronic pulse), Melodic (gentle alternating tones), and Buzzer (urgent sweeping frequency). You can preview each sound using the "Test Sound" button before setting your alarm.
How does the snooze function work?
When the alarm rings, clicking "Snooze" will silence it for exactly 9 minutes β the classic snooze duration. After 9 minutes, the alarm will sound again. You can snooze multiple times. Click "STOP" to fully deactivate the alarm.
Is my privacy protected when using this tool?
Yes! Everything runs locally in your browser. We do not collect, store, or transmit any personal data. The alarm time, sound preferences, and all settings remain on your device. No account or registration is required.
Sleep Cycle Calculator β Wake Up at the Optimal Time
Plan your sleep based on 90-minute cycles to wake up feeling refreshed. Input when you need to wake up or go to bed to see ideal sleep times.
Iron Absorption Optimizer β Online Timing & Food Pairing
Schedule your iron supplement away from inhibitors (coffee, calcium). Visual reminder and log.
Yogurt Incubation Timer & Culture Scheduler
Set timer for incubation period with temperature guide. Track hours for optimal tanginess. Homemade yogurt.
Speech Timer β Online Practice Presentations with WPM
Paste your speech, set time limit, and practice with a pacing indicator (words per minute). Refine delivery.
Emoji Countdown Timer β Online Animated Pizza/Smiley Alarm
Set a short timer with a themed emoji animation (e.g., pizza cooking). A playful visual countdown.
Reapply Sunscreen Reminder β Online Timer for Outdoor Play
Set interval reminders to reapply sunscreen every 2 hours (or custom) with sound and notification. Protect kids' skin.
Baby Nap Timer β Online Reminder & Soothing Sounds
Set a nap timer with optional gentle white noise or lullabies (Web Audio). Reminder to put baby down. Fully local, no ads.
Sunburn Risk Timer - Online UV Index to Safe Exposure
Enter skin type and UV index to estimate time to sunburn. Visual countdown reminder to reapply sunscreen or seek shade. Educational only.
Breathing Exercise Timer - Online Inhale Hold Exhale Visual Guide
Animated circle guides your breathing: breathe in, hold, breathe out. Customizable ratios (e.g., 4-7-8). Soothing colors, optional bell sound. Purely local.
Posture Reminder - Online Sit Straight Alert & Timer
Set recurring audio/visual reminders to check and correct sitting posture. Adjustable interval and notification style. Helps reduce back pain from desk work.
Meditation Chime Timer - Online Mindfulness Bell
Set a meditation duration with optional interval chimes. Soothing bell sounds at the start and end. No ads.
Sleep Cycle & REM Calculator - Online Best Bedtimes
Find the optimal goβtoβsleep or wakeβup times based on 90βmin sleep cycles. Wake up between REM cycles and feel refreshed.
Digital Binary Clock - Online Time in Bits Fullscreen
A beautiful fullβscreen binary clock showing hours, minutes, seconds in glowing bits. Dark mode perfect for desks.
Coding Interview Timer - Online LeetCode Practice Clock
Set a 20, 30, or 45βminute countdown to simulate a technical interview. Hidden/unhidden. Boost your prep.
Digital Hourglass - Online Visual Timer with Sand
An animated hourglass that you can set for any time. Watch the sand flow. Beautiful and calming timer.
Pomodoro Task Planner - Online Work Sessions & ToβDo List
Combine a Pomodoro timer with a builtβin toβdo list. Estimate pomodoros per task, track completed sessions, and see daily progress. All data stored locally.
Posture Reminder Timer - Online Sit Up Straight Alert
Set a recurring timer that reminds you to check your posture. Desktop notification with a gentle chime. Stay healthy.
Meditation Bell Timer - Online Interval Singing Bowl
Set a meditation session with singing bowl sounds at start, interval chimes, and end bell. No ads, pure serenity.
Analog Clock Face Generator - Online Custom Watch Design
Design a custom analog clock face by choosing colors, hands, and numbers. Download as SVG or PNG. For craft or UI design.
Custom Reminder Pad - Online Simple Alarm Notes
Write a short note and set a specific time for a browser notification reminder. Great for quick oneβoffs. Local.
Meeting Speaker Timer - Online Countdown Per Agenda Item
Set a list of agenda items with allocated minutes. Advance through speakers and see remaining time visually. Keep meetings on track.
Egg Timer - Online Soft, Medium, Hard Boiled Countdowns
Pick your egg style and get a precise timer with visual progress. Perfect boiled eggs every time. No app needed.
Tea Steeping Timer - Online Perfect Brew Countdown
Choose your tea type and start a precise steeping timer with colorβchanging background. Never overβsteep again.
Work Break Reminder - Online EyeβCare & Stretch Timer
Set a timer that reminds you to take a break, stretch, or follow the 20β20β20 rule. Desktop notification supported. Runs offline.
Countdown to Date - Online Custom Event Timer
Create a personal countdown to any future date (birthday, vacation, launch). Shows days, hours, minutes, seconds. Locally stored.
Time Until Retirement Clock - Online Countdown to Freedom
Set your desired retirement date and see a live countdown of remaining days, hours, minutes. Totally motivating.
Time Machine Clock - Online Past & Future Time Viewer
Set a date in the far future or past and see a mock clock with impossible times. Purely for fun.
Retro Clock Widget - Online Fullscreen Nixie or Flip Clock
Display a stylish retro flip clock or Nixie tube clock in full screen. Perfect for desk presentation or decoration. Pure CSS and JS.
Stopwatch & Countdown Timer - Online Dual Tool
Dual-function tool: a precise stopwatch with laps and a configurable countdown timer with alarm sound. Works offline, perfect for activities.