Volume Booster: Make Quiet Audio & Video Louder
Play any song, voice note, podcast or video from your device up to 500% louder, with a limiter that keeps it clean.
How to use it
Three quick steps.
Choose a file
Pick an audio or video file from your phone or computer. It is not uploaded anywhere.
Set the boost
Start at 150% or 200% and raise it only if you need to.
Turn on voice clarity
For quiet speech, lectures and voice notes, switch on Voice clarity.
When to use the volume booster
Some recordings are just too quiet: a voice note recorded far from the phone, a lecture, an old video or a podcast with low levels. Even at full volume, your speaker cannot help. The booster raises the level of the file itself, then a limiter stops the loud parts from crackling.
What the settings do
| Setting | What it does | Best for |
|---|---|---|
| 150% | Gentle lift | Music that is a bit quiet |
| 200% | Clear boost | Most videos and podcasts |
| 300% to 500% | Strong boost | Very quiet voice notes |
| Voice clarity | Cuts rumble, lifts speech | Lectures, calls, interviews |
Booster vs a blocked speaker
If everything on your phone sounds quiet or muffled, the problem is usually the speaker, not the recording. Water or dust in the grille blocks sound. Run the Water Eject or Dust Cleaner first, then compare with the Sound Meter.
Stay safe
Boosted audio through headphones can be very loud. Start low, keep sessions short, and never boost music you already play at full volume.
Questions people ask
Is my file uploaded?
No. The file is played and boosted inside your browser and never leaves your device.
Can it boost YouTube or Spotify?
No. Browsers do not let one website change the sound of other apps. It works with files you choose.
Why does it sound distorted at 500%?
Some recordings are too noisy to boost that much. Lower the boost or turn on Voice clarity.
Will it damage my speaker?
The limiter keeps peaks under control. Still, avoid long sessions at maximum boost on small speakers.
What file types are supported?
Most MP3, M4A, WAV, AAC, MP4 and WebM files that your browser can play.
Does it work on iPhone?
Yes. Choose a file from Files or Photos in Safari or Chrome and press play.
Can I save the boosted file?
Not yet. The boost is applied while it plays in your browser.
More free speaker tools
Everything you need to clean and test your audio.
Water Eject
Push water out of your phone speaker with a 165 Hz tone.
Open tool →🌪️Dust Cleaner
Sweep tones that shake dust and lint out of the grille.
Open tool →📞Ear Speaker Cleaner
Gentle tones for the small speaker you hold to your ear.
Open tool →🎧Earbuds Cleaner
Clear water and dust from AirPods and earbuds, left or right.
Open tool →🎛️Tone Generator
Play any frequency from 1 Hz to 20 kHz in 4 waveforms.
Open tool →🔈Left & Right Speaker Test
Check each channel and the phase of your speakers.
Open tool →🎚️Bass Test
Find the lowest frequency your speaker can play.
Open tool →👂Frequency Range Test
Sweep 20 Hz to 20 kHz to test speakers and hearing.
Open tool →🎙️Mic Test
Check your microphone level and record a sample.
Open tool →📏Sound Meter (dB)
Measure loudness and compare your speaker before and after cleaning.
Open tool →⏱️Bluetooth Delay Test
Find out how many milliseconds your Bluetooth audio lags.
Open tool →🌫️White & Pink Noise
White, pink and brown noise for speaker testing, focus and sleep.
Open tool →👂Hearing Age Test
Find the highest tone you can hear and your hearing age.
Open tool →🎧Headphone Test
Check left, right, center, 3D sound and bass in one minute.
Open tool →🤖Android Water Eject
Water eject with vibration for Samsung and all Android phones.
Open tool →