Monitor Calibration SPL Calculator
Find the per-speaker SPL to dial in for a calibrated mix room from the reference standard and number of channels.
Theatrical dub stages calibrate each channel to 85 dB SPL (C-weighted, slow) with −20 dBFS pink noise; near-field TV rooms use ~79 to match home listening; Bob Katz's K-20 music room uses 83. Calibrating means a given dBFS always maps to a known SPL, so your mix decisions translate to every other calibrated room.
Rule / Formula
Find the per-speaker SPL to dial in for a calibrated mix room from the reference standard and number of channels.
About Monitor Calibration SPL Calculator
Find the per-speaker SPL to dial in for a calibrated mix room from the reference standard and number of channels. Theatrical dub stages calibrate each channel to 85 dB SPL (C-weighted, slow) with −20 dBFS pink noise; near-field TV rooms use ~79 to match home listening; Bob Katz's K-20 music room uses 83. Calibrating means a given dBFS always maps to a known SPL, so your mix decisions translate to every other calibrated room.
How to use Monitor Calibration SPL Calculator
- 1Enter your values into the fields in Monitor Calibration SPL 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 Monitor Calibration SPL Calculator?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: SMPTE RP200 (cinema B-chain calibration).
- ✓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 Monitor Calibration SPL Calculator do?+
Find the per-speaker SPL to dial in for a calibrated mix room from the reference standard and number of channels. Theatrical dub stages calibrate each channel to 85 dB SPL (C-weighted, slow) with −20 dBFS pink noise; near-field TV rooms use ~79 to match home listening; Bob Katz's K-20 music room uses 83.
Is my data private?+
Yes. Monitor Calibration SPL Calculator runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is Monitor Calibration SPL Calculator based on?+
It follows SMPTE RP200 (cinema B-chain calibration); Katz, B., K-System; ITU-R BS.1116 (listening conditions). Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
Monitor Calibration SPL Calculator uses: per-channel SPL set with −20 dBFS pink noise; all-channels SPL = per-ch + 10·log₁₀(channels). The tool shows this formula with your own numbers substituted so you can verify the result.
Is Monitor Calibration SPL 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 Monitor Calibration SPL Calculator on your website
Want Monitor Calibration SPL 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/monitor-calibration-spl-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Monitor Calibration SPL Calculator — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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