Upload an audio file and make it louder — all in your browser. The format stays the same; the audio is re-encoded with the new volume. Peaks are clipped at full scale, so very high boosts can distort.
Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.
Pick a boost level from +25% to +200% and the tool amplifies your file, keeping its original format. It works on any supported audio: MP3, WAV, FLAC, M4A, OGG, and AAC.
Watch for clipping: boosting past the point where peaks hit maximum distorts them. If the file is quiet overall, a large boost is safe; if it already has loud moments, normalize instead, which raises everything as far as the loudest peak allows.