Top 3 LUFS Loudness Tools Compared

Your edit measures −19.4 LUFS integrated and the platform you are uploading to normalises toward a different target. The fix is a single gain move. Working out how large that move is takes ten seconds and going wrong on it means either a quiet upload or a limiter chewing your peaks.

What makes the task annoying is that “loudness tool” covers three unrelated jobs. Some tools measure a file. Some process and re-render it. Some just do the arithmetic between a measured value and a target. Search results mix all three, so you can spend five minutes uploading a video to a service when what you needed was a subtraction and a peak-margin check.

How to judge a loudness tool

Measure, calculate, or process? Decide which you need before you open anything. They are different tools that share vocabulary.

Does it check true peak? Applying gain without checking headroom is how you turn a loudness fix into clipping.

Does it upload your file? Rendering usually means transferring a video somewhere. Some tools process locally and say so.

Does it name platform targets? Platform normalisation targets change; a tool that hard-codes one and never updates it is worse than one that lets you type the number.

The comparison

Facts checked August 2026; plans can change.

Jukeblocks LUFS Meter

Jukeblocks answers the first question in the chain: what is my audio actually measuring? It reports integrated loudness, loudness range, and true peak, plus momentary and short-term values — which is the full set you need before deciding anything.

It measures and stops. Once you have the numbers, the decision about how much gain to apply, and the applying of it, both happen elsewhere.

CMUSE LUFS to dB Calculator

CMUSE’s calculator is the arithmetic layer: give it your current loudness and a target and it returns the gain change along with a peak margin, across streaming, broadcast, podcast, film, and music contexts. Being shown the peak margin next to the gain figure is the part that prevents the clipping mistake.

It lives inside an article on a music site, so there is page around it, and it does not touch your file — the gain move is yours to make in your editor.

Dubreel Loudness Preview

Dubreel takes a different and genuinely useful angle: rather than telling you a number, it lets you hear how your audio will sound after streaming normalisation, and states that it runs locally in your browser. For deciding whether a loud master will survive being turned down, ears beat arithmetic.

It is a preview. You are auditioning the effect, not exporting a normalised file.

Video Loudness Normalizer

Ours is the calculation, aimed specifically at video. Enter your clip’s measured LUFS and the target loudness you are aiming at, and it returns the gain adjustment needed to match it. It runs entirely in your browser, and nothing is uploaded because nothing needs to be.

The limitations are real and worth being direct about. It does not measure — you need a meter such as Jukeblocks, or your editor’s own loudness readout, to get the input value. And it does not process: it hands you a number in decibels to apply in your NLE, so your file never passes through it. It is one step in a chain, not the chain.

Which one to pick

• If you need to know what your audio measures, start with Jukeblocks.
• If you want the gain change with a peak margin across several standards, use CMUSE.
• If you want to hear the result before committing, use Dubreel.
• If you already have a measurement and a target and want the gain figure for a video, use ours.

How to do it with Video Loudness Normalizer

1. Measure your clip’s integrated LUFS in your editor or a meter.
2. Open the Video Loudness Normalizer and enter that value and your target.
3. Apply the returned gain change in your editing timeline, then re-measure to confirm — and check true peak before exporting. More video tools are in the tools directory.

You might also need

• Audio Normalizer — when the source is an audio file rather than a video edit.
• Video Metadata Viewer — for confirming the audio stream you are actually measuring.

Frequently asked questions

Is there a free LUFS tool that doesn’t need an account?

Yes. Dubreel states it runs locally in your browser, and Jukeblocks and CMUSE are free to use. Ours needs no account because the site has no signup at all.

What exactly is LUFS?

Loudness Units relative to Full Scale — a measure of perceived loudness rather than peak level, defined in ITU-R BS.1770 and used by broadcasters and streaming platforms. It is the reason two files with identical peak levels can sound wildly different in volume.

Should I normalise before uploading?

Usually yes, to a sensible target with headroom, so you control the result rather than leaving it to a platform’s automatic adjustment. Check each platform’s current published target, since these are revised from time to time.

Final thought

Measure, calculate, apply, re-measure. Skipping the last step is how a loudness fix quietly becomes a clipping problem.

Try the free Video Loudness Normalizer