10 / VOLUME
Change Audio Volume
Increase or decrease audio volume with a gain in decibels. Compare the original and processed file, then download MP3 or WAV without uploading audio.
Your audio stays on your device. No server upload.
Adjust the settings and compare the actual result.
Each tool lists its supported formats and limits.
Make an audio file louder or quieter
Apply a fixed gain from −24 to +12 dB to an MP3 or PCM WAV. Positive values raise amplitude; negative values reduce it. The same gain applies across the track, so its duration and relative dynamics stay the same unless overload causes distortion. This is not loudness normalization, compression or noise reduction.
How to change audio volume
- Choose a mono or stereo MP3 or PCM WAV, up to 30 MiB and ten minutes.
- Start with a modest adjustment such as +3 dB or −6 dB. Positive gain displays a clipping warning.
- Select MP3 or 16-bit PCM WAV and create the audio.
- Compare the original and processed versions at a comfortable device volume, then download.
Why louder can become distorted
A source near full scale may have almost no room for a boost. For example, doubling the amplitude of a peak already above half scale can push it beyond the output range. The tool does not measure peak headroom or apply a limiter. Positive gain may clip; the warning is a risk notice, not a measurement of your file.
Lowering the playback volume does not repair clipping already written into the export. Reduce the gain and process the original again. A negative gain also cannot reconstruct peaks that were clipped in the source.
What the dB setting means
Amplitude is multiplied by 10 raised to gain/20. +6 dB is about 1.995× amplitude; −6 dB is about 0.501×. These are amplitude ratios, not promises about perceived loudness. Zero dB adds no gain, but output encoding and resampling can still change the file.
Output formats and limits
MP3 export is lossy. WAV uses uncompressed 16-bit PCM and may be larger. A 48 kHz input stays at 48 kHz; other accepted rates export at 44.1 kHz. Mono and stereo channel counts are preserved. Gain does not shorten a file or materially reduce its constant-bitrate MP3 payload.
Read the volume and clipping guide. For a changing level at an edge, use fade in or fade out. To keep only a section, use trim audio. For smaller downloads, see MP3 compression and the file size calculator.
Can this fix quiet speech in noisy audio?
A fixed boost increases both speech and background noise. It does not isolate speech, remove hiss or balance quiet and loud passages separately. Keep your original and listen to both quiet and loud sections before saving.