ATSC A/85 Loudness Checker (US TV)
Check a US television deliverable against ATSC A/85 / CALM Act: −24 LKFS ±2 dB integrated, true peak ≤ −2 dBTP.
ATSC A/85 is the US Recommended Practice that the FCC's CALM Act enforcement points to. The −24 LKFS target (LKFS and LUFS are the same unit) with ±2 dB tolerance applies to the anchor element, normally dialog.
🔒 Everything runs in your browser via the Web Audio API — your audio is never uploaded.
Check a US television deliverable against ATSC A/85 / CALM Act: −24 LKFS ±2 dB integrated, true peak ≤ −2 dBTP.
About ATSC A/85 Loudness Checker (US TV)
Check a US television deliverable against ATSC A/85 / CALM Act: −24 LKFS ±2 dB integrated, true peak ≤ −2 dBTP. ATSC A/85 is the US Recommended Practice that the FCC's CALM Act enforcement points to. The −24 LKFS target (LKFS and LUFS are the same unit) with ±2 dB tolerance applies to the anchor element, normally dialog.
How to use ATSC A/85 Loudness Checker (US TV)
- 1Drag a file onto ATSC A/85 Loudness Checker (US TV), or click to choose one — it is analysed locally and never uploaded.
- 2Wait a moment while the tool processes the file entirely in your browser.
- 3Read the result, metrics and pass/fail verdict.
- 4Copy or export the report for your delivery, QC log or records.
Why use ATSC A/85 Loudness Checker (US TV)?
- ✓Analyses your file entirely in your browser — it is never uploaded, so even confidential masters stay private.
- ✓Built on a published reference: ATSC A/85:2013 — Techniques for Establishing and Maintaining Audio Loudness.
- ✓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 ATSC A/85 Loudness Checker (US TV) do?+
Check a US television deliverable against ATSC A/85 / CALM Act: −24 LKFS ±2 dB integrated, true peak ≤ −2 dBTP. ATSC A/85 is the US Recommended Practice that the FCC's CALM Act enforcement points to.
Is my file uploaded to a server?+
No. ATSC A/85 Loudness Checker (US TV) 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 ATSC A/85 Loudness Checker (US TV) based on?+
It follows ATSC A/85:2013 — Techniques for Establishing and Maintaining Audio Loudness; FCC CALM Act rules, 47 CFR §73.682(e). Always confirm against the current official document, as specifications and rates can change.
Is ATSC A/85 Loudness Checker (US TV) 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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