How do I measure video audio loudness in LUFS?

Upload your video into the Video Loudness Meter. The audio engine decodes the audio track and computes Integrated Loudness (LUFS), Loudness Range (LU), True Peak (dBTP), and RMS levels according to ITU-R BS.1770 / EBU R128 standards.

What LUFS target should I use for YouTube and Spotify?

YouTube normalizes audio to -14 LUFS (with -1.0 dBTP True Peak), while Spotify and Apple Music target -14 LUFS and -16 LUFS respectively.

What happens if my video is too loud (e.g. -8 LUFS)?

Social platforms will automatically turn down the volume of overly loud videos, which can cause dynamic distortion or inconsistent playback.

Can I see real-time loudness graphs?

Yes. The meter plots momentary, short-term, and integrated loudness curves over the video timeline.

Does the meter check for digital clipping?

Yes. Flags any True Peak exceeding 0.0 dBTP to prevent harsh digital distortion.

Is audio processed locally on my device?

Yes. Audio buffers are decoded client-side via Web Audio API AudioContext.

NexLove Media

Video Loudness Meter & Audio Level Analyzer

Analyze audio amplitude, RMS loudness, and peak audio levels from any video file without external APIs. Verify YouTube/broadcast loudness compliance.

TL;DR: Video Loudness Meter & Audio Level Analyzer is a 100% free browser-based media utility. Measure RMS dB, peak dB, and estimated LUFS audio loudness of video files in your browser.

Drag & drop your video here

or click to browse from your device

Or press Ctrl + V to paste

MP4 WebM MOV MKV Up to 500MB

100% local browser processing — this file never leaves your device

Understanding Video Loudness Meter & Audio Level Analyzer

Analyze audio amplitude, RMS loudness, and peak audio levels from any video file without external APIs. Verify YouTube/broadcast loudness compliance. Designed for creators, video editors, audio engineers, web designers, and developers who need instant, high-precision processing without software installation, watermarks, or file uploads.

Mathematical Formula & Technical Methodology

\text{RMS (dB)} = 20 \log_{10}\left(\sqrt{\frac{1}{N}\sum x_i^2}\right)

Formula Variables Explained:
Computes root-mean-square electrical power level and peak digital sample levels in decibels.

Step-by-Step Worked Example

A video with -14 dB RMS meets standard streaming loudness targets.

100% Client-Side Privacy Guarantee

All media decoding, manipulation, calculations, and encoding execute locally inside your web browser using HTML5 Canvas, Web Audio API, WebCodecs, Web Crypto, and modern JavaScript engines. Zero server uploads, zero telemetry, and no registration required.

Frequently Asked Questions

: Upload your video into the Video Loudness Meter. The audio engine decodes the audio track and computes Integrated Loudness (LUFS), Loudness Range (LU), True Peak (dBTP), and RMS levels according to ITU-R BS.1770 / EBU R128 standards.
: YouTube normalizes audio to -14 LUFS (with -1.0 dBTP True Peak), while Spotify and Apple Music target -14 LUFS and -16 LUFS respectively.
: Social platforms will automatically turn down the volume of overly loud videos, which can cause dynamic distortion or inconsistent playback.
: Yes. The meter plots momentary, short-term, and integrated loudness curves over the video timeline.
: Yes. Flags any True Peak exceeding 0.0 dBTP to prevent harsh digital distortion.
: Yes. Audio buffers are decoded client-side via Web Audio API AudioContext.

Embed This Tool

Add the live Video Loudness Meter & Audio Level Analyzer to your own website with this embed code:

<iframe src="https://nexlove.org/embed/video-loudness-meter.html" width="100%" height="650" style="border:1px solid #e2e8f0;border-radius:12px" title="Video Loudness Meter & Audio Level Analyzer — NexLove" loading="lazy"></iframe>

Related Tools

Browse all Media Tools