$$ price range
Sonic Alert
Heaviest sleepers who sleep through anything
Sonic Alert Sonic Bomb Dual Extra Loud Alarm Clock with Bed Shaker
Wake styleSound + bed shaker
StrengthExtreme
113 dB alarm and vibration
Check price on Amazon(paid link)Loud
The Loudest Alarm Clocks You Can Buy
These clocks crank up to vacuum-cleaner volume and beyond. All have adjustable volume so they don't have to be at full power every morning.
Our picks
$ price range
Travelwey
Best budget bedside clock
Travelwey Home LED Digital Alarm Clock
Wake styleSound
StrengthStrong
Large dimmable display
Check price on Amazon(paid link)Compare at a glance
| Pick | Best for | Type | Key detail | Price range | |
|---|---|---|---|---|---|
| Sonic Alert Sonic Bomb Dual Extra Loud Alarm Clock with Bed Shaker | Heaviest sleepers who sleep through anything | Sound + bed shaker | Extreme | $$ | Amazon →(paid link) |
| Travelwey Home LED Digital Alarm Clock | Best budget bedside clock | Sound | Strong | $ | Amazon →(paid link) |
How to choose
dB matters — but adjustable dB matters more
A 110 dB alarm at full power can damage hearing over time. Look for adjustable volume so you can scale it down once you're awake.
Frequently asked
What is the loudest alarm clock?+
The Sonic Alert Sonic Bomb at 113 dB is the loudest mainstream consumer alarm clock, and adds a bed shaker and flashing lights on top.
Editorial review updated September 2026