Volume booster
Make a quiet recording or video louder, up to four times as loud, without clipping: a limiter holds the peaks under −1 dB. Free with no limit, in your browser.
Drop audio or video here
MP3 · WAV · M4A · MP4 · MOV · WEBM — up to 60 min. Nothing is uploaded.
How it works
- Drop your file onto the box above: MP3, M4A, WAV or any other audio, or a video.
- AudioRinse measures how loud it is on your device and boosts it to Auto, as loud as YouTube plays.
- Still too quiet? Pick +10 or +20 dB, and switch between the original and the boosted sound to compare.
- Download it as MP3, M4A or WAV, free with no limit. Stereo stays stereo.
Before / after
Hear it before you drop anything
“After” is AudioRinse at its default settings. The voice is synthetic, so we can share it freely.
This recording came out at −30 LUFS, far below podcast level; after, it's at −16.
How much to boost
- Auto brings the file to −14 LUFS, the level YouTube and Spotify play at: loud, with room left for the peaks. A file that's already that loud stays as it is.
- +6 dB sounds about 1.5 times as loud, +10 dB about twice and +20 dB about four times: every 10 dB roughly doubles how loud it sounds.
- Start with Auto, play the loudest part, and go up a step only if it's still too quiet. The numbers under the result show where it started and where it landed.
Louder without clipping
Turning a file up in most editors multiplies every sample, and the peaks that end up past full scale are cut flat: that's the crackle of an over-boosted file. Here the boost goes through a look-ahead limiter. It sees each peak coming 5 milliseconds ahead and turns down just that peak, so the rest of the sound gets the whole boost.
It checks the peaks at 4 times the sample rate, including the points between samples, where converting to MP3 or AAC would otherwise clip. The result stays under −1 dBTP, the headroom YouTube, Spotify and podcast apps ask for.
Volume booster or loudness normalizer?
Use the booster when a file is simply too quiet and you want it louder, by as much as it takes. Use the loudness normalizer when it has to land on a standard, like −16 LUFS for a podcast or −23 for broadcast; it turns a file down, too.
A boost turns everything in the file up together. If a voice is quiet next to loud music, the music remover can turn the music down under it; if one speaker is quieter than another, the audio enhancer evens them out.
Questions
Is my file uploaded anywhere?
No. AudioRinse measures and boosts it inside your browser, on your own device. Your file never leaves it, so there's no upload to wait for and nothing stored on a server.
Is it free?
Yes. Boosting, listening and downloading the sound as MP3, M4A or WAV are free, with no limit and no account, for files up to 1 hour. Pro ($7.99 a month or $39.99 a year) adds the video download, with the picture copied as it is, and many files at once.
Will it distort?
It won't clip: nothing is pushed past full scale. Where the boost would take a peak over −1 dBTP, a look-ahead limiter turns down just that peak, for a few milliseconds, and the page shows by how much. A few dB of that goes unnoticed. Past about 12 dB, drums and plosives lose their punch; a smaller boost keeps it.
How loud can it go?
Up to +20 dB, about four times as loud. How much of that you hear depends on the file: one with sharp peaks, like drum hits or a door slam, has less room, and the limiter takes back more of the boost. The numbers under the result show how loud it came out, in LUFS.
Does it work on videos?
Yes. Drop an MP4, MOV, WebM or MKV: the sound is boosted, and you can download it free as MP3, M4A or WAV, or as the video with its picture copied untouched (video downloads are part of Pro). The video volume page has more on that.
Will background noise get louder too?
Yes: a boost turns up everything in the file, hiss and hum included. Take out the background noise or the hum first, then boost the cleaned file.
Can I boost several files at once?
Yes, with Pro: drop them all, and each gets the boost you picked, one after another on your device.
Other tools
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- Remove silence from audioDead air out: every long pause cut to a set length.
- De-esserHarsh S sounds softened; the voice keeps its brightness.
- Fix clipped audioFlattened, crackly peaks from recording too loud, rebuilt.
- Mouth click removerLip smacks and tongue clicks out of a voice-over.
- Normalize audioPodcast, YouTube or broadcast loudness, true-peak safe.
- MP3 volume boosterA quiet MP3 made louder, saved as an MP3 again.
- Increase video volumeA quiet video made louder; the picture stays as it is.
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- Remove background noise from videoClean a video's soundtrack. The picture is kept untouched.
- Voice isolatorKeep only the voice; everything else goes.
- Audio enhancerNoise removal + voice EQ + loudness, in one step.
- Voice enhancerClearer, fuller, evenly loud voice.
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- Online voice recorderRecord from your microphone; download MP3 or WAV, or clean it up.
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- Split a song into stemsVocals, drums, bass and the rest, each on its own track.
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- Extract the vocals from a songThe vocals alone from any song: an acapella for remixes and covers.
- Make an instrumental of a songThe instrumental version of any song, the vocals taken out.
- Remove the drums from a songThe drums out of a song, for drummers to play along.
- Find the BPM of a songThe tempo of any song, with its key and Camelot code.
- Find the key of a songThe key of any song, with its Camelot code and tuning.
- BPM and key finderTempo, key and Camelot for a whole folder of songs, as a CSV.
- Tap tempoTap along on each beat and read the BPM.
- Camelot wheelWhich keys mix: pick one, or drop your songs onto the wheel.
- Pitch changerRaise or lower the pitch in semitones; the speed stays the same.
- Change the key of a songFinds the song's key, then moves it to the key you pick.
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- 432 Hz converterRetunes a song to A = 432 Hz, at the same speed.
- Audio to sheet musicA piano recording written out as a two-hand score.
- MP3 to sheet musicAn MP3 of piano music, written out as a printable score.
- Piano transcriptionPiano playing written out, both hands, in seconds.
- Video to MP3The sound of any video as an MP3. Free, no limit.
- MP4 to MP3Any MP4's sound as an MP3, in seconds.
- Video to audioAny video to MP3, M4A or WAV. Free, no limit.
- MOV to MP3iPhone and QuickTime videos to MP3.
- MP4 to WAVUncompressed WAV from any MP4, for editing.
- WebM to MP3WebM video or audio to MP3.
- MKV to MP3OBS recordings and MKV films to MP3.
- Extract audio from videoA video's sound track as a file, in its original quality.
- Remove audio from videoThe same video with its sound track taken out; the picture untouched.
- Mute a videoSilence a video for good: the sound track out, the picture as it was.
- M4A to MP3Voice memos and iTunes songs as MP3.
- WAV to MP3WAV to MP3 at a fraction of the size.
- MP3 to WAVMP3 to uncompressed WAV, for editing.
- M4A to WAVVoice memos and M4A to uncompressed WAV.
- OGG to MP3Ogg Vorbis, Opus and voice messages to MP3.
- FLAC to MP3Lossless FLAC to MP3, tags and cover kept.
- Transcribe audio to textAny recording to text, transcribed on your computer.
- Convert audio to textSpeech in any audio file, converted to text on your device.
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- Transcribe a video to textWhat's said in a video, as a timestamped transcript.
- Convert video to textSpeech in any video, converted to text on your device.
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- Auto captions for your videoCaptions for reels and videos, styled and burned in.
- Generate subtitles automaticallyTimed SRT and VTT subtitles from any video.
- Interview transcriptionSpeaker-labelled transcripts, made on your computer.
- Transcription for qualitative researchInterviews and focus groups, ready for NVivo and MAXQDA.