Change audio volume
Boost a quiet recording or turn down a loud one, then save it as MP3 or WAV. Free, in your browser.
🔒 Your files are processed on your device and never uploaded.
Frequently asked questions
How do I convert my files?
Choose or drop your files, adjust the options if you like, then press “Convert” and download the result.
Are my files uploaded to a server?
No. The conversion runs entirely in your browser, so your files never leave your device — safe for private photos and documents.
Is there a file size limit?
There is no fixed limit. Very large files (hundreds of MB) depend on your device's memory and can be slow on phones.
Is it free?
Yes — free and unlimited, with no sign-up and no watermark.
About the formats
MP3
MP3 is the most widely supported audio format. Its quality is set by the bitrate, from 32 to 320 kbps: 32–64 kbps is enough for voice recordings, 128–192 kbps sounds good for most music, and 256–320 kbps is close to CD quality. A minute of stereo at 192 kbps is about 1.4 MB.
WAV
WAV is uncompressed audio: perfect quality but large files (about 10 MB per minute in stereo). It is used for editing, recording studios and some phone systems.