Live Audio Peak dBFS & RMS Loudness Meter
Processed in your browser
Inspect live microphone or audio file peak dBFS, RMS loudness levels, and dynamic range headroom with clipping alerts.
Acoustic Signal Source
PEAK dBFS
-∞ dB
RMS LOUDNESS
-∞ dB
PEAK STATUS
CLEAN HEADROOM
-60 dB
-36 dB
-18 dB
-6 dB
0 dBFS
⚡
Direct In-Browser Handoff
Acoustic Analysis & Spectrum Suite
Chain this tool with complementary private browser utilities for a complete zero-server workflow:
Helpful Examples
Target Podcast Headroom
Broadcast peaks maintained under -1.0 dBFS with -14 LUFS target RMS.
Mic input testHow to Use the Live Audio Peak dBFS & RMS Loudness Meter
Broadcast audio meter conforming to decibel full-scale (dBFS) acoustic standards. Real-time fast peak detector, RMS sliding window calculation, and visual red clipping warnings using the Web Audio API.
Privacy & Data Processing Notice
No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.
Frequently Asked Questions
What is 0 dBFS?
0 dBFS represents the maximum possible digital level before clipping and distortion occurs. Audio signals should generally peak between -3 dBFS and -1 dBFS for clean headroom.
Does this tool transmit microphone audio?
No. Microphone signals and audio files are analyzed locally via high-speed Web Audio AnalyserNode buffers.
Related Utilities
Frequently paired browser tools in Audio & Media Tools