K-System Reference Calculator (K-20/K-14/K-12)
Pick a Bob Katz K-System scale and get the RMS reference, headroom and the LUFS region it corresponds to for calibrated monitoring.
The K-System ties a meter scale to a calibrated monitor level (83 dB SPL pink noise at 0 VU), so 'mix to 0 VU' produces consistent loudness by ear. K-20 mixes translate almost directly to the −23/−24 LUFS broadcast world; K-14 sits near where dynamic streaming masters land. It's the pre-LUFS system that LUFS vindicated.
Rule / Formula
Pick a Bob Katz K-System scale and get the RMS reference, headroom and the LUFS region it corresponds to for calibrated monitoring.
About K-System Reference Calculator (K-20/K-14/K-12)
Pick a Bob Katz K-System scale and get the RMS reference, headroom and the LUFS region it corresponds to for calibrated monitoring. The K-System ties a meter scale to a calibrated monitor level (83 dB SPL pink noise at 0 VU), so 'mix to 0 VU' produces consistent loudness by ear. K-20 mixes translate almost directly to the −23/−24 LUFS broadcast world; K-14 sits near where dynamic streaming masters land. It's the pre-LUFS system that LUFS vindicated.
How to use K-System Reference Calculator (K-20/K-14/K-12)
- 1Enter your values into the fields in K-System Reference Calculator (K-20/K-14/K-12).
- 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 K-System Reference Calculator (K-20/K-14/K-12)?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: Katz, B., 'Mastering Audio', K-System chapter.
- ✓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 K-System Reference Calculator (K-20/K-14/K-12) do?+
Pick a Bob Katz K-System scale and get the RMS reference, headroom and the LUFS region it corresponds to for calibrated monitoring. The K-System ties a meter scale to a calibrated monitor level (83 dB SPL pink noise at 0 VU), so 'mix to 0 VU' produces consistent loudness by ear.
Is my data private?+
Yes. K-System Reference Calculator (K-20/K-14/K-12) runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is K-System Reference Calculator (K-20/K-14/K-12) based on?+
It follows Katz, B., 'Mastering Audio', K-System chapter; AES 2000 paper: An Integrated Approach to Metering. Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
K-System Reference Calculator (K-20/K-14/K-12) uses: K-N: 0 VU = −N dBFS RMS with N dB of headroom to full scale. The tool shows this formula with your own numbers substituted so you can verify the result.
Is K-System Reference Calculator (K-20/K-14/K-12) 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 K-System Reference Calculator (K-20/K-14/K-12) on your website
Want K-System Reference Calculator (K-20/K-14/K-12)on 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/k-system-reference-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="K-System Reference Calculator (K-20/K-14/K-12) — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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