Sound Meter: Decibel dB Level

Turn your smartphone into a handy sound level meter for ambient noise, music, and other sound sources. The app uses your device's built-in microphone to measure volume in decibels (dB) in real time and displays it clearly.

Features at a glance:

Real-time sound level measurement
Instantly captures and displays the current noise level in decibels (dB).

Min, max, and average values
Keep track of minimum, maximum, and average readings at any time.

Recordings and PDF export
Save measurements as audio files or create PDF reports for documentation and printing.

Background measurement
Keep the app running even when your screen is locked – for example, to analyze nighttime noise levels or potential sleep disturbances.

Dark mode
The dark design is easy on the eyes at night and can help save battery.

Manual calibration
Adjust the displayed dB value to match your smartphone for more accurate results on your device model.

Simple to use
The clean interface makes the app quick and easy to use as a sound level meter.

Perfect for:
- Measuring ambient noise at home
- Monitoring the volume of music and devices
- Checking noise levels in the office or workplace
- Documenting noise exposure
- Analyzing nighttime noise
- Getting an idea of construction or traffic noise

A note on accuracy:
Smartphone microphones are primarily designed for voice recording, so measured decibel values may differ from professional sound level meters. For the most reliable results, we recommend calibrating before first use. You can calibrate against a professional meter as a reference, or set the value to around 20–30 dB in a very quiet environment.

Protect your hearing
Identify potentially harmful noise sources early and keep an eye on the volume of your surroundings. Download the decibel meter now and use your smartphone as a practical noise measurement tool.