Microphone Decibel Sound Meter

Measure ambient sound pressure and noise levels in decibels (dB) with peak hold, frequency spectrum visualizer, and WHO safety thresholds.

100% Client-Side Privacy: All calculations, text transformations, and file operations run locally in your browser. No files or personal inputs are uploaded to external servers.

️ Microphone Decibel & Sound Pressure Meter

Real-time acoustic decibel measurement, peak hold, frequency spectrum, and OSHA noise safety warnings.

0 dB
Compensates for microphone preamp gain variances
Environmental Category Quiet Environment
Safe (< 70 dB)
Live Sound Pressure (SPL)
-- dB
0 dB 40 dB 70 dB 85 dB (OSHA) 120 dB
MIN -- dB
AVG -- dB
PEAK -- dB
REAL-TIME FFT FREQUENCY SPECTRUM RATE: 44.1 kHz
BASS (20-250 Hz) MIDRANGE (250-4000 Hz) TREBLE (4-20 kHz)

World Health Organization (WHO) Environmental Noise Standards

0 – 45 dB Quiet Ambient

Bedroom, quiet study library, whisper.

45 – 65 dB Moderate Sound

Normal conversation, office background, air conditioning.

65 – 85 dB Loud Noise

Heavy city traffic, vacuum cleaner, noisy cafeteria.

> 85 dB (Hazardous) Hearing Hazard

Lawnmower, factory machinery. Prolonged exposure causes hearing damage.

Informational & Educational Disclaimer

This tool is designed for informational and educational estimation purposes only. Calculations are based on user-provided inputs and standard mathematical formulas. For official tax, legal, or financial decisions, please consult certified professionals or official government publications.

Related Tools in Browser Hardware & Media

Web Speech API

Speech-to-Text Live Voice Transcriber

Convert live microphone voice input into editable text in real-time with multi-language recognition and instant text/Markdown export.

 SpeechSynthesis

Text-to-Speech Natural Audio Reader

Listen to articles, notes, or uploaded documents read aloud with natural system voices, customizable pitch, speed, and real-time word highlighting.

 MediaRecorder API

In-Browser Screen & Webcam Recorder

Record full screen, application windows, browser tabs, or webcam video directly into high-quality WebM/MP4 with zero cloud uploads.

 Orientation API

Device Orientation & Digital Bubble Level

High-precision digital spirit level and surface alignment gauge utilizing device accelerometer and gyroscope sensors.