Make Audio Louder

Raise the overall loudness and let a limiter catch the peaks, instead of simply turning the gain up until it distorts.

or drop it here

MP3, WAV, M4A, FLAC, OGG, Opus, AIFF, WMA, AMR and the sound of most videos. Files stay on your device.

How it works

Choose an audio file.
Pick a loudness target, or set the gain yourself.
Check the before and after loudness and peak, and preview.
Export and download.

Louder, not just higher

Turning the gain up until the loudest peak touches 0 dBFS often leaves quiet recordings still quiet, because a single short peak sets the limit. This tool offers a loudness target instead: it measures the integrated loudness of the file in LUFS, applies the gain that reaches your target, and lets a true-peak limiter catch the peaks that would otherwise clip.

The default is -14 LUFS with a ceiling of -1 dBTP, a level most music streaming services play back at. Use -16 LUFS for podcasts and speech.

How to choose the target

Louder is not always better. A higher target needs more gain, so the limiter works harder and the sound gets denser. The before and after table shows loudness, true peak and the peak to average (crest) value of the result, measured on the exported file, so you can see what the limiter did.

Quiet voice memo or lecture: -16 LUFS.
Music you want to match to streaming services: -14 LUFS.
Just a fixed boost: switch the method to "Set the gain" and use the slider.

Limits

A limiter cannot add loudness without cost: if the file has very high peaks relative to its average level, reaching the target may leave it audibly squashed. If that happens, lower the target. Noise in the recording is amplified with everything else.

Questions

Why does my file sound distorted after making it louder?

Probably because peaks were pushed past full scale and clipped. Keep Limit peaks on, lower the target, or reduce the gain until the clipping warning disappears.

What is LUFS?

Loudness Units relative to Full Scale: a measure of perceived loudness over the whole file, defined in ITU-R BS.1770. It follows how people hear better than peak level does.

What is a true-peak limiter?

A limiter that also catches peaks that appear between samples after the audio is converted back to analog or to a lossy format. The ceiling is given in dBTP.