Decibel Meter & dB Noise Meter
Music & Audio In-app purchases Contains ads
Accurate decibel meter & dB sound level meter: measure noise levels anywhere
- Price
- Free
- In-app purchases
- Updated
- Oct 27
- 2026 Β· v1.1
Screenshots
About Decibel Meter & dB Noise Meter
How loud is it, really? Find out in one second.
Decibel Meter turns your phone into an accurate decibel meter and dB sound level meter. One big number tells you how loud it is, one color tells you if it's safe, and one simple sentence tells you what it sounds like β "like a normal conversation" or "like heavy traffic up close."
π WE MEASURE LOUDNESS. WE NEVER RECORD.
Sound is turned into a number on your phone and thrown away. No audio is ever saved or uploaded.
π A REAL dB METER, FREE
β’ Big, easy-to-read dB level with a color gauge: green (safe), yellow (careful), red (loud)
β’ A, C and Z weighting, Fast and Slow response
β’ Min, average (Leq), max and peak
β’ Real-time graph, 1/3-octave bands and high-resolution FFT spectrum with dominant frequency
β’ Full-screen number you can read from across the room
π AUTOMATIC HISTORY
Every measurement of 10 seconds or more is saved automatically, with a full graph, Leq, min, max, L10, L50 and L90. Name your sessions: bedroom at night, office, street, concert.
𦻠NOISE DOSE (NIOSH / OSHA), FREE
See today's noise dose, TWA and an 8-hour projection, so you know when it's time to take a break from the noise.
π LOUD NOISE ALERT
Get a vibration alert when the sound level goes above the limit you choose.
π· NOISE PHOTO
Take a photo with the dB level, date and time on it. Perfect to show your landlord, your HOA or your neighbor how loud it really gets.
π― CALIBRATION
Each phone model is pre-calibrated, and you can fine-tune it yourself or choose which microphone to use.
π HOW LOUD IS THAT?
A simple chart of everyday sounds β from a whisper to a siren β with how long each level is safe, and a live "You are here" marker.
β‘ QUICK ACCESS
Home screen widget, Quick Settings tile and app shortcuts to start measuring in one tap.
GREAT FOR
β’ Checking noise from neighbors, traffic or construction
β’ Concerts, bars, workshops and power tools
β’ Measuring how quiet your bedroom is at night
β’ Testing speakers, home theaters and soundproofing
β’ Students, teachers and anyone curious about sound
β DECIBEL METER PRO
β’ No ads
β’ Export your history to CSV
β’ Advanced calibration with a reference sound level meter
Try it free for 7 days with the yearly plan. Cancel anytime.
GOOD TO KNOW
A phone is not a certified sound level meter. Readings are estimates for personal use and are not intended for legal, medical or occupational compliance purposes.
Questions or ideas? Write to us at [email protected]
Decibel Meter turns your phone into an accurate decibel meter and dB sound level meter. One big number tells you how loud it is, one color tells you if it's safe, and one simple sentence tells you what it sounds like β "like a normal conversation" or "like heavy traffic up close."
π WE MEASURE LOUDNESS. WE NEVER RECORD.
Sound is turned into a number on your phone and thrown away. No audio is ever saved or uploaded.
π A REAL dB METER, FREE
β’ Big, easy-to-read dB level with a color gauge: green (safe), yellow (careful), red (loud)
β’ A, C and Z weighting, Fast and Slow response
β’ Min, average (Leq), max and peak
β’ Real-time graph, 1/3-octave bands and high-resolution FFT spectrum with dominant frequency
β’ Full-screen number you can read from across the room
π AUTOMATIC HISTORY
Every measurement of 10 seconds or more is saved automatically, with a full graph, Leq, min, max, L10, L50 and L90. Name your sessions: bedroom at night, office, street, concert.
𦻠NOISE DOSE (NIOSH / OSHA), FREE
See today's noise dose, TWA and an 8-hour projection, so you know when it's time to take a break from the noise.
π LOUD NOISE ALERT
Get a vibration alert when the sound level goes above the limit you choose.
π· NOISE PHOTO
Take a photo with the dB level, date and time on it. Perfect to show your landlord, your HOA or your neighbor how loud it really gets.
π― CALIBRATION
Each phone model is pre-calibrated, and you can fine-tune it yourself or choose which microphone to use.
π HOW LOUD IS THAT?
A simple chart of everyday sounds β from a whisper to a siren β with how long each level is safe, and a live "You are here" marker.
β‘ QUICK ACCESS
Home screen widget, Quick Settings tile and app shortcuts to start measuring in one tap.
GREAT FOR
β’ Checking noise from neighbors, traffic or construction
β’ Concerts, bars, workshops and power tools
β’ Measuring how quiet your bedroom is at night
β’ Testing speakers, home theaters and soundproofing
β’ Students, teachers and anyone curious about sound
β DECIBEL METER PRO
β’ No ads
β’ Export your history to CSV
β’ Advanced calibration with a reference sound level meter
Try it free for 7 days with the yearly plan. Cancel anytime.
GOOD TO KNOW
A phone is not a certified sound level meter. Readings are estimates for personal use and are not intended for legal, medical or occupational compliance purposes.
Questions or ideas? Write to us at [email protected]
What’s new
Version 1.1 Β· Updated October 27, 2026
Welcome to Decibel Meter: accurate dB readings, automatic history, free noise dose and noise photos. We never record audio.