Short-Term Burst Headroom Calculator
For short-form content with a Max Short-term limit, find how loud a 3-second hook can get before it breaches the spec given your integrated target.
Short-form specs (EBU R 128 s1, ad-delivery rules) add a Max Short-term limit precisely so you can't game integrated loudness with one screaming 3-second section. With a −23 integrated target and a −18 Max-ST limit, your loudest hook can sit only 5 LU above the average — design your build-ups around that ceiling.
Rule / Formula
For short-form content with a Max Short-term limit, find how loud a 3-second hook can get before it breaches the spec given your integrated target.
About Short-Term Burst Headroom Calculator
For short-form content with a Max Short-term limit, find how loud a 3-second hook can get before it breaches the spec given your integrated target. Short-form specs (EBU R 128 s1, ad-delivery rules) add a Max Short-term limit precisely so you can't game integrated loudness with one screaming 3-second section. With a −23 integrated target and a −18 Max-ST limit, your loudest hook can sit only 5 LU above the average — design your build-ups around that ceiling.
How to use Short-Term Burst Headroom Calculator
- 1Enter your values into the fields in Short-Term Burst Headroom Calculator.
- 2The result and any pass/fail verdict update instantly as you type — no button to press.
- 3Check the substituted formula and worked example to see exactly how the result was derived.
- 4Copy or note the result for your spec, delivery or planning.
Why use Short-Term Burst Headroom Calculator?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: EBU R 128 s1 (short-form).
- ✓Shows the governing formula and a worked example, so you can trust and check every result.
- ✓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 Short-Term Burst Headroom Calculator do?+
For short-form content with a Max Short-term limit, find how loud a 3-second hook can get before it breaches the spec given your integrated target. Short-form specs (EBU R 128 s1, ad-delivery rules) add a Max Short-term limit precisely so you can't game integrated loudness with one screaming 3-second section.
Is my data private?+
Yes. Short-Term Burst Headroom Calculator runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is Short-Term Burst Headroom Calculator based on?+
It follows EBU R 128 s1 (short-form); EBU Tech 3342. Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
Short-Term Burst Headroom Calculator uses: burst headroom (LU) = Max-Short-term limit − integrated target. The tool shows this formula with your own numbers substituted so you can verify the result.
Is Short-Term Burst Headroom Calculator 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.
Embed Short-Term Burst Headroom Calculator on your website
Want Short-Term Burst Headroom Calculatoron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/short-term-loudness-burst-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Short-Term Burst Headroom Calculator — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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