Sound Meter: Decibel dB Level

Sound Meter: Decibel dB Level turns your phone into a decibel meter and sound level meter: a handy test & measurement tool. Measure noise in dB, read min, average & max readings and test the noise level around you.

🔊 Measure noise level in seconds
Use the meter like any measuring instrument. Tap Start and the noise meter shows the current sound level in dBA. The large gauge, the live graph and the peak hold make every reading easy to follow. Reset the meter whenever you begin a new sound measurement.

• Live dB meter readings in dBA
• Min, average & max decibels with peak hold
• Live graph of the last 60 seconds
• Decibel scale to compare each reading with everyday places
• Current noise level highlighted on the reference table

📐 Decibel meter specs
• Weighting: A-weighting (dBA, close to human hearing), C-weighting (dBC, includes the bass) in Pro
• Time response: fast (125 ms)
• Statistics: min, max, average (Leq) and peak hold
• Calibration: offset of ±20 dB, saved in the sound meter app
• Measuring range: up to the hardware limit of the phone microphone, with a MAX indicator
• Frequency meter: 1/3 octave band analyzer from 20 Hz to 20 kHz in Pro

🎚️ Calibrate your decibel meter
Every phone microphone is different, so every measuring device needs calibration. Compare the reading with a reference sound level meter and adjust the offset in a few taps. Your calibration stays saved on your phone, and a short guide shows how to test and calibrate the meter.

🕒 Save a history of your sound measurements
Keep each measurement with date, duration, min, average & max level and an optional label such as "bedroom" or "workshop". The free decibel meter keeps your last 10 measurements; Pro keeps an unlimited history.

⭐ Sound Meter Pro: record, listen & report
• Record audio while you measure and play it back with the dB graph
• Tap a threshold exceedance to hear what was loud, or keep only short event clips
• Record long sound metering sessions with a dimmed night screen
• Get a threshold alert by vibration & tone when a reading goes above your chosen dB level
• Export a noise report as CSV & PDF with time stamps, a graph and threshold exceedances, and share it with the audio as proof
• Switch to dBC readings & open the frequency meter, a simple sound spectrum analyzer tool
• Remove all ads
Choose a one-time Lifetime purchase or a monthly plan.

🏠 Use the decibel meter at home, at work & on the go
Record neighbor noise and keep the audio and the dB report for a complaint. Test the noise level in an office, a workshop or a classroom. Measure a bedroom or a baby room at night. Measure traffic noise at home, or run a quick sound check before a rehearsal or a concert. The app works as a portable sound meter, SPL meter, sound detector, noise detector and noise level meter: a measuring device that is always in your pocket.

📊 Read the meter the simple way
See one clear reading on the decibel meter, a gauge and the noise decibels compared with a reference table. Start a sound test, watch the sound tracker graph and stop when you are done. The sound meter app needs only the microphone, works offline and keeps the screen simple: no sign-in and no setup.

🔒 Respect your privacy
The app uses the microphone to measure sound level. Audio recording is optional and stays on your phone: it is never uploaded, and you can delete it at any time. No account and no location permission are needed.

⚠️ Know the limits of a phone
A phone is not a certified dB sound level meter or sound pressure meter. Readings depend on your device and its microphone, and every phone has an upper limit. When a reading reaches that limit, the meter shows MAX instead of a wrong number. Use a certified measuring instrument or calibrated test equipment for legal, medical or workplace safety decisions.

Download Sound Meter: Decibel dB Level and use your phone as a sound meter and decibel meter whenever you need to measure noise.