Sound Level Meter

What is Sound Level Meter?

Sound Level Meter is a friendly web tool that measures sound with your device microphone. It gives instant decibel readings, tracks MIN/AVG/MAX/PEAK levels, and shows a live frequency spectrum so you can spot dominant tones. Use weighting filters (dBA, dBC, dBZ), adjust calibration offset, and view interactive charts to analyze noise over time. Built for engineers, environmental specialists, and curious listeners, it offers professional-grade features without complicated setup. Join the Discord for feature requests and use it right in your browser — no downloads required.

Key features

• Instant decibel readings from your device's microphone with minimal latency.
• Live MIN, AVG, MAX, and PEAK metrics tracked during sessions.
• FFT-based frequency spectrum visualization to spot dominant audio frequencies.
• Selectable weighting filters like dBA and dBC for standard compliance.
• Calibration offset and sensitivity controls for improved measurement accuracy.
• Interactive charts and history graphs for visual analysis and comparisons.