Sound Meter: Decibel Mete

Sound Meter turns your phone into a precise decibel meter. Whether you're checking noise levels at work, testing acoustics at home, or just curious about your surroundings, Sound Meter gives you instant, accurate readings right from your microphone.

🎙️ REAL-TIME MEASUREMENT
See live dB readings update in real time. The clear, easy-to-read display shows you exactly how loud your environment is at any moment.

📊 MEASUREMENT HISTORY
Track sound levels over time. Review past readings to understand noise patterns in your environment.

🎚️ CALIBRATION SETTINGS
Fine-tune the meter to match your device's microphone for more accurate results.

🔒 PRIVACY FIRST
No audio is ever recorded, stored, or transmitted. All processing happens entirely on your device. Sound Meter never collects personal data.

⚡ LIGHTWEIGHT & FREE
No sign-up required. No account needed. Just open the app and start measuring.

COMMON USE CASES
• Check noise levels at home, office, or outdoors
• Verify quiet zones (libraries, hospitals, study rooms)
• Monitor noise exposure at concerts or events
• Test room acoustics before recording
• Ensure safe listening environments for kids

HOW IT WORKS
Sound Meter samples audio from your microphone in real time, converts it to a decibel (dB) reading, and immediately discards the audio. Nothing is saved or sent anywhere.

PERMISSIONS
• Microphone — required to measure sound levels
• Internet — required to display ads

Sound Meter is free and supported by ads. No purchases required.