ToolJoltTools

Netflix Loudness Checker (−27 LKFS)

Pre-check a Netflix mix: −27 LKFS ±2 dB dialog-anchored loudness with true peak ≤ −2 dBTP, per the Netflix sound mix spec.

Netflix Sound Mix Spec — target -27 LUFS (±2 LU), true peak ≤ -2 dBTP

Netflix's delivery spec anchors loudness to dialog using speech-gated measurement (Dolby Dialogue Intelligence). A full-programme measurement is a useful first-pass QC: if your dialog-driven programme reads far outside −27 ±2, the official measurement will too.

References: Netflix Partner Help: Sound Mix Specifications & Best Practices; ITU-R BS.1770-4

🔒 Everything runs in your browser via the Web Audio API — your audio is never uploaded.

Pre-check a Netflix mix: −27 LKFS ±2 dB dialog-anchored loudness with true peak ≤ −2 dBTP, per the Netflix sound mix spec.

About Netflix Loudness Checker (−27 LKFS)

Pre-check a Netflix mix: −27 LKFS ±2 dB dialog-anchored loudness with true peak ≤ −2 dBTP, per the Netflix sound mix spec. Netflix's delivery spec anchors loudness to dialog using speech-gated measurement (Dolby Dialogue Intelligence). A full-programme measurement is a useful first-pass QC: if your dialog-driven programme reads far outside −27 ±2, the official measurement will too.

How to use Netflix Loudness Checker (−27 LKFS)

  1. 1Drag a file onto Netflix Loudness Checker (−27 LKFS), or click to choose one — it is analysed locally and never uploaded.
  2. 2Wait a moment while the tool processes the file entirely in your browser.
  3. 3Read the result, metrics and pass/fail verdict.
  4. 4Copy or export the report for your delivery, QC log or records.

Why use Netflix Loudness Checker (−27 LKFS)?

  • ✓Analyses your file entirely in your browser — it is never uploaded, so even confidential masters stay private.
  • ✓Built on a published reference: Netflix Partner Help: Sound Mix Specifications & Best Practices.
  • ✓100% free with no sign-up, no watermark and no usage limits.
  • ✓Works on any device — desktop, tablet or phone — and keeps working offline once loaded.

Frequently asked questions

What does Netflix Loudness Checker (−27 LKFS) do?+

Pre-check a Netflix mix: −27 LKFS ±2 dB dialog-anchored loudness with true peak ≤ −2 dBTP, per the Netflix sound mix spec. Netflix's delivery spec anchors loudness to dialog using speech-gated measurement (Dolby Dialogue Intelligence).

Is my file uploaded to a server?+

No. Netflix Loudness Checker (−27 LKFS) processes your file entirely in your browser using local JavaScript and the Web platform — your media never leaves your device, so it is safe for unreleased or confidential content.

What standard or source is Netflix Loudness Checker (−27 LKFS) based on?+

It follows Netflix Partner Help: Sound Mix Specifications & Best Practices; ITU-R BS.1770-4. Always confirm against the current official document, as specifications and rates can change.

Is Netflix Loudness Checker (−27 LKFS) free to use?+

Yes — it is completely free with no account, no sign-up and no usage limits. There is no watermark and no paywall.

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