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Free Decibel Meter

55 Decibels — How Loud Is It?

Moderate

55 dB is about as loud as electric toothbrush. An electric toothbrush running, or a dishwasher heard from an adjacent room, both reach about 55 dB. It is a common upper limit in residential daytime noise ordinances, and — per WHO's sleep guidance — enough to interrupt undisturbed sleep for many people if sustained through the night.

What does 55 dB sound like?

  • 55 dB — Electric toothbrush
  • 55 dB — Dishwasher, next room
  • 50 dB — Moderate rainfall

Safe exposure time at 55 dB

Under NIOSH's Recommended Exposure Limit (85 dB, 3 dB exchange rate), safe unprotected exposure at 55 dB is effectively unlimited. Under OSHA's legal Permissible Exposure Limit (90 dB, 5 dB exchange rate), it is effectively unlimited.

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    Frequently asked questions

    Can you sleep with 55 decibels?
    It's harder. 55 dB exceeds WHO's guideline values for undisturbed sleep, and many light sleepers will wake or have their sleep quality reduced at this level over a full night.
    What is 55 dB equivalent to?
    An electric toothbrush running, or a dishwasher heard from the next room — a clearly audible but not loud everyday household level.
    Is 55 dB considered noise pollution?
    Many residential daytime noise limits sit at or near 55 dB(A) as an upper bound — for example, India's CPCB caps residential areas at 55 dB(A) by day — so sustained sources at this level can trigger local noise-nuisance rules.

    Sources