Sound Meter: dB Level Reader

SmartToolsDev

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About this app

Sound Meter is a decibel meter and noise meter that turns your phone into a simple sound level meter app, so you can measure room noise, read the db level in real time, and check how loud a space really is. Use this db meter and decibel reader to see ambient noise on a color-coded gauge, with MIN/AVG/MAX stats and real-world references for every level.

"Is it actually loud in here, or is it just me?" The neighbor's bass at midnight, the office that never feels quiet, the restaurant where you leave hoarse from shouting: without a number, it's your word against theirs, and you can't tell whether the white-noise machine, the new fan, or the closed window actually changed anything.

This sound meter puts a number on it. Open the app, grant microphone access once, and the decibel level of the room is on screen in real time: a gauge from Quiet to Dangerous, session MIN/AVG/MAX, and a plain-language reference (whisper, conversation, vacuum, concert) so the number means something immediately.

KEY FEATURES
• Live dB readout: real-time sound level from the phone microphone
• Color-coded gauge: four zones (Quiet, Moderate, Loud, Dangerous) readable at a glance
• MIN / AVG / MAX session stats: capture the range of a room, not just one moment
• Real-world references: every level mapped to a familiar sound, from rustling leaves to a rock concert
• On-device processing: microphone input is analyzed locally and never recorded or uploaded
• No setup: open, grant mic access once, measure

MADE FOR
• Checking how quiet a bedroom, nursery, or home office really is, and whether changes help
• Gauging a restaurant, gym, or open-plan office before committing to a table or desk
• Comparing appliance noise: which fan, HVAC setting, or dishwasher is actually quieter
• Documenting a recurring noise pattern with comparable MIN/AVG/MAX numbers
• Curious people who want to know what 60 dB feels like in their own kitchen

WHY USE A DECIBEL METER AT HOME
A noise meter is most useful when you compare. Measure the room before and after you close a window, switch on a fan, or move a speaker, and the db level shows the difference. The noise level meter gauge and the reference sounds make those numbers easy to read, even if you have never looked at decibels before.

ABOUT ACCURACY
Phone microphones differ, so readings are indicative, not certified. Sound Meter is not a calibrated SPL instrument and should not be used for OSHA, workplace-compliance, medical, or hearing-protection decisions. For everyday "how loud is this room" questions, it is exactly the right tool.

Download Sound Meter to read the decibel level around you, track MIN/AVG/MAX, and see what your noise level really sounds like.

What’s new

Stability and small fixes.