Headroom
See how much level you can raise before a signal clips at 0 dBFS.
About Headroom
Headroom is the distance from your hottest peak to the zero full-scale ceiling, and the max boost shows how far the target ceiling allows. A true peak ceiling of -1 dBFS prevents inter-sample clipping, so headroom planning keeps loud masters from distorting on playback.
Formula
Headroom
Headroom = 0 dBFS - peak level; max boost = target ceiling - peak
- dBFS
- Decibels relative to full scale, the digital ceiling
Worked example
With the default values below, Headroom returns Headroom Before Clip of 12.0. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Peak levelaccepts -60–0 dBFS
- -12 dBFS
- Normalization targetaccepts -10–0 dBFS
- -1 dBFS
Results
- Headroom Before Clip
- 12.0 dB
- Max Boost at Target
- 11.0 dB
- Margin
- Comfortable room to boost
Step by step
- 1Values used
- 2Headroom
- 3Headroom Before Clip= 12.0 dB
- 4Max Boost at Target= 11.0 dB
- 5Margin= Comfortable room to boost
Assumptions and limits
- The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Headroom calculated?
Headroom = 0 dBFS - peak level; max boost = target ceiling - peak Headroom is the distance from your hottest peak to the zero full-scale ceiling, and the max boost shows how far the target ceiling allows.
Why does Headroom matter?
A true peak ceiling of -1 dBFS prevents inter-sample clipping, so headroom planning keeps loud masters from distorting on playback.
What values do I need to enter?
This calculator takes 2 inputs: Peak level, Normalization target. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.