Cinema Trailer Leq(m) Loudness Checker
Theatrical trailers are capped at 85 Leq(m) by TASA. Check a trailer's full-programme loudness as a pre-screen before a calibrated Leq(m) measurement.
Theatrical trailers use the cinema-specific Leq(m) metric (M-weighted equivalent level), capped at 85 by TASA, measured on a calibrated stage — fundamentally different from BS.1770. This tool can't replace that measurement; it gives a BS.1770 sanity check so an obviously-hot trailer is caught before the official screening.
🔒 Everything runs in your browser via the Web Audio API — your audio is never uploaded.
Theatrical trailers are capped at 85 Leq(m) by TASA. Check a trailer's full-programme loudness as a pre-screen before a calibrated Leq(m) measurement.
About Cinema Trailer Leq(m) Loudness Checker
Theatrical trailers are capped at 85 Leq(m) by TASA. Check a trailer's full-programme loudness as a pre-screen before a calibrated Leq(m) measurement. Theatrical trailers use the cinema-specific Leq(m) metric (M-weighted equivalent level), capped at 85 by TASA, measured on a calibrated stage — fundamentally different from BS.1770. This tool can't replace that measurement; it gives a BS.1770 sanity check so an obviously-hot trailer is caught before the official screening.
How to use Cinema Trailer Leq(m) Loudness Checker
- 1Drag a file onto Cinema Trailer Leq(m) Loudness Checker, 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 Cinema Trailer Leq(m) Loudness Checker?
- ✓Analyses your file entirely in your browser — it is never uploaded, so even confidential masters stay private.
- ✓Built on a published reference: Trailer Audio Standards Association (TASA) 85 Leq(m) cap.
- ✓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 Cinema Trailer Leq(m) Loudness Checker do?+
Theatrical trailers are capped at 85 Leq(m) by TASA. Check a trailer's full-programme loudness as a pre-screen before a calibrated Leq(m) measurement. Theatrical trailers use the cinema-specific Leq(m) metric (M-weighted equivalent level), capped at 85 by TASA, measured on a calibrated stage — fundamentally different from BS.1770.
Is my file uploaded to a server?+
No. Cinema Trailer Leq(m) Loudness Checker 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 Cinema Trailer Leq(m) Loudness Checker based on?+
It follows Trailer Audio Standards Association (TASA) 85 Leq(m) cap; ISO 21727 (M-weighting / Leq(m)). Always confirm against the current official document, as specifications and rates can change.
Is Cinema Trailer Leq(m) Loudness Checker 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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