Audio Crest Factor Calculator
Compute crest factor (peak − RMS) for a track, stem or live capture and interpret what it says about compression and headroom.
A sine wave has a crest factor of 3 dB, uncompressed drums 18–20 dB, and a brickwalled master can dip under 6. Crest factor predates LUFS metering but is still the fastest sanity check on how much a compressor/limiter chain has eaten — and it's what your gain-staging headroom must accommodate.
Rule / Formula
Compute crest factor (peak − RMS) for a track, stem or live capture and interpret what it says about compression and headroom.
About Audio Crest Factor Calculator
Compute crest factor (peak − RMS) for a track, stem or live capture and interpret what it says about compression and headroom. A sine wave has a crest factor of 3 dB, uncompressed drums 18–20 dB, and a brickwalled master can dip under 6. Crest factor predates LUFS metering but is still the fastest sanity check on how much a compressor/limiter chain has eaten — and it's what your gain-staging headroom must accommodate.
How to use Audio Crest Factor Calculator
- 1Enter your values into the fields in Audio Crest Factor 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 Audio Crest Factor Calculator?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: AES Pro Audio Reference: crest factor.
- ✓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 Audio Crest Factor Calculator do?+
Compute crest factor (peak − RMS) for a track, stem or live capture and interpret what it says about compression and headroom. A sine wave has a crest factor of 3 dB, uncompressed drums 18–20 dB, and a brickwalled master can dip under 6.
Is my data private?+
Yes. Audio Crest Factor Calculator runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is Audio Crest Factor Calculator based on?+
It follows AES Pro Audio Reference: crest factor. Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
Audio Crest Factor Calculator uses: crest factor (dB) = peak (dBFS) − RMS (dBFS). The tool shows this formula with your own numbers substituted so you can verify the result.
Is Audio Crest Factor 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 Audio Crest Factor Calculator on your website
Want Audio Crest Factor 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/audio-crest-factor-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Audio Crest Factor Calculator — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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