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    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.

    Disclosure: We may earn a small commission from qualifying purchases through links on this page, at no extra cost to you. It doesn't influence which products we recommend — we pick what we'd actually use.

    At a glance

    PickBest forPriceRating
    Sonic Alert Sonic Bomb Dual Extra Loud Alarm Clock with Bed ShakerHeaviest sleepers who sleep through anything$454.5 / 5View →
    Travelwey Home LED Digital Alarm ClockBest budget bedside clock$204.5 / 5View →

    Our picks

    1
    Sonic Alert
    image unavailable

    #1 pick · Heaviest sleepers who sleep through anything

    Sonic Alert Sonic Bomb Dual Extra Loud Alarm Clock with Bed Shaker

    4.5(36,827 reviews)·$45

    The Sonic Bomb is the most-recommended alarm clock for heavy sleepers and the hearing-impaired. The combination of a 113 dB siren, flashing lights, and an under-mattress bed shaker is nearly impossible to sleep through.

    Pros

    • 113 dB adjustable alarm
    • Powerful bed shaker
    • Battery backup
    • Pulsating alert lights

    Cons

    • Industrial design
    • Bed shaker cable is short
    View on amazon
    2
    Travelwey
    image unavailable

    #2 pick · Best budget bedside clock

    Travelwey Home LED Digital Alarm Clock

    4.5(60,000 reviews)·$20

    If you just want a reliable, easy-to-read clock that won't blind you at 3 a.m., this is the one. Tens of thousands of 5-star reviews can't be wrong.

    Pros

    • Simple, no-frills operation
    • Big readable digits
    • Adjustable brightness (off, low, high)
    • Mains powered with battery backup

    Cons

    • No radio
    • No USB charging
    View on amazon

    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.

    Last updated: May 2026