# What Is LUFS? Loudness for Streaming, Explained

> What LUFS means, why streaming platforms use about -14 LUFS, what true peak (dBTP) is, and how to hit the right loudness target for free.

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# What Is LUFS? Loudness for Streaming Explained

Updated June 2026 · by Loopin

**LUFS** stands for *Loudness Units relative to Full Scale* — the standard way to measure how loud a track actually sounds to human ears (defined by ITU-R BS.1770 / EBU R128). Unlike a peak meter, LUFS reflects perceived loudness over time, which is why every streaming platform uses it.

## Why −14 LUFS?

Streaming services **normalise** playback so songs don't jump in volume. Most target around **−14 LUFS integrated**. If you master much louder than that, the platform simply turns your track *down* — so you lose dynamics and punch for no gain in loudness. Mastering to roughly −14 LUFS keeps your track competitive and dynamic.

## What is true peak (dBTP)?

**True peak**, measured in dBTP, is the real maximum level *between* samples. Lossy codecs (MP3, AAC) and digital-to-analog converters can push these inter-sample peaks above 0 dB and clip, even when your normal peak meter looks fine. The fix is to leave headroom: master to a **−1 dBTP** ceiling. This is the single most common thing beginners miss.

## Loudness range and dynamics

Loudness isn't everything — you also want to keep some **dynamic range** so the track breathes. Crushing a master flat makes it tiring within seconds. Aim for the loudness target while keeping the punch.

## How to hit the target without the maths

[Loopin Mastering](/mastering) measures your track's integrated LUFS, auto-gains it to the preset's target (about −14 LUFS for streaming, hotter for club), and applies a true-peak limiter at −1 dBTP — so you land in the right place automatically, free and in your browser.

**Try it now:** [open the free Loopin Mastering tool](/mastering) — drop in an MP3 or WAV, pick a feel, and download a streaming-ready master. Nothing leaves your device.

## Related guides

- [How to master a song online](/mastering/how-to-master-a-song-online)
- [Mixing vs mastering](/mastering/mixing-vs-mastering)
- [Master for Spotify, Apple & YouTube](/mastering/master-for-spotify-apple-youtube)

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Source: https://onloopin.com/mastering/what-is-lufs