Convert to MP3
Convert audio and video files to MP3 online. Choose your audio quality and download the result in seconds.
Free to use. No signup, software installation, or watermarks.
Click or drag files to upload
Maximum 10 files, 50MB per file. Supports audio, video, and Kugou encrypted formats.
Rated 4.8 out of 5 based on 850+ reviews
Why choose Audio Converter?
25+ Formats
Convert between audio, video, and encrypted Kugou formats including MP3, WAV, FLAC, MP4, MOV, AVI, KGM, KGG, KGMA, VPR, and more.
100% Free
No signups, no fees, no hidden subscriptions. Convert your files in the browser for free.
Secure
We take your security seriously. All file transfers use advanced HTTPS encryption.
Online
No installs needed - convert audios right from your browser from anywhere, anytime.
How to convert an audio?
Upload audio file
Select and upload your audio file(s) from the upload area, or click to browse your device and select the files you wish to convert. Upload up to 3 files at once (50MB per file) in major audio and video formats, plus KGM, KGG, KGMA, and VPR.
Choose your target format
Select the format you'd like to convert your audio to, MP3, WAV, OGG, FLAC, and more. You can also adjust quality, sample rate, resolution, bitrate, and there's lots of control. When you're ready, it's time to hit 'Convert' button.
Download your file
Go do something else as the conversion is processing, usually it's very quick. And once it's done it's time to save the file to your device. All files are automatically deleted from our servers after conversion.
Convert Audio to MP3 at up to 320kbps
Choose MP3 as the output format and select a bitrate from 64kbps to 320kbps. Use 320kbps for high-quality music, or choose a lower bitrate when you need a smaller file. Converting at a higher bitrate preserves the available quality but cannot restore detail missing from the original audio.
Supported Audio & Video Formats
Popular Audio Formats
- MP3 - Most widely used lossy audio format, perfect for music and podcasts
- WAV - Uncompressed audio format, excellent for professional use
- FLAC - Lossless compression, maintaining original audio quality
- AAC - Advanced Audio Coding, better quality than MP3 at same bitrate
- OGG - Open-source Vorbis codec, great for streaming
Additional Audio Formats
- M4A - MPEG-4 audio format used by Apple devices
- WMA - Windows Media Audio format
- AIFF - Audio Interchange File Format for high quality
- OPUS - Modern codec for internet audio
- AMR - Adaptive Multi-Rate for speech recordings
Video to Audio Extraction
- MP4 - Extract audio from MP4 videos to MP3 format
- MOV - Convert QuickTime and iPhone videos to MP3
- AVI - Extract soundtracks from AVI video files
- MPEG - Convert broadcast and DVD videos to MP3
- MKV/WEBM - Extract audio from modern video formats
- KGM/KGG/KGMA/VPR - Upload Kugou encrypted audio files and process them for conversion
Kugou Format Support
Upload encrypted Kugou files directly
You can now upload KGM, KGG, KGMA, and VPR files directly. We decrypt supported uploads during processing, detect the real audio stream, and then convert that result into your selected output format such as MP3.
This is useful for Kugou downloads that come in names like .kgm, .kgg, or multi-part names like .kgm.flac.
Dedicated converter pages
Explore our audio tools and converters
Convert popular audio and video formats, or use a free browser tool to edit, combine, record, and improve audio.
Frequently Asked Questions
How do I convert a file to MP3?
Upload your audio or video file, select MP3 as the output format, choose your preferred quality, and click Convert. When processing is complete, download the MP3 to your device.
Can I convert files to MP3 on Windows, Mac, Android, or iPhone?
Yes. This online MP3 converter works in modern browsers on Windows, macOS, Android, iPhone, and iPad. You do not need to install desktop software or an app.
Is the audio converter really free?
Yes, our audio converter is free to use with no hidden charges or subscriptions. The free web plan includes file size and hourly limits to keep things fast and fair for everyone.
How long does audio conversion take?
Most audio files convert in seconds. The exact time depends on your file size and format, but typically a 5MB audio file converts in under 10 seconds.
What is the maximum file size?
On the free web plan, you can upload files up to 50MB each. This is sufficient for most songs, podcasts, voice notes, and short video clips.
Are my files safe and secure?
Absolutely. All file transfers use HTTPS encryption, and your files are automatically deleted from our servers within 30 minutes of upload. We never access, share, or store your files permanently.
Can I convert multiple files at once?
Yes. On the free web plan, you can upload and convert up to 3 files at once, then download them individually or as a single ZIP.
Can I convert audio to 320kbps MP3?
Yes. Select MP3 as the output format, open the quality settings, and choose 320kbps before converting. Increasing the bitrate does not restore quality already missing from the original file.
Why Choose Our Audio Converter?
Our online audio converter stands out with its combination of speed, security, and simplicity. Whether you're a music producer, content creator, or just need to convert a song for your device, we've got you covered with professional-grade conversion tools that work right in your browser.
No software installation, no registration required, and no watermarks on your converted files. Just upload, convert, and download - it's that simple. Join thousands of satisfied users who trust our converter for their audio needs.
Popular Audio & Video Conversions
Convert MP3 to WAV
Convert MP3 files to high-quality WAV format for professional audio editing and production. Lossless conversion preserves audio quality.
Convert WAV to MP3
Compress WAV files to MP3 format to reduce file size while maintaining excellent audio quality. Perfect for music libraries and streaming.
Convert MP4 to MP3
Extract high-quality audio from MP4 videos. Perfect for music extraction, podcasts, and creating audiobooks from video content.
Convert MP3 to MP4
Package MP3 audio into an MP4 container for upload workflows, editors, and platforms that prefer MP4 files.
Convert MOV to MP3
Extract audio from iPhone videos and QuickTime MOV files. Convert Apple device videos to portable MP3 audio format.
Convert FLAC to MP3
Transform lossless FLAC files to compact MP3 format. Reduce file size while maintaining high audio quality.
Convert AVI to MP3
Extract audio from AVI video files. Convert movie soundtracks and legacy video content to MP3 format.
Convert M4A to MP3
Convert Apple's M4A format to MP3 for broader compatibility across all devices and media players.
Convert MPEG to MP3
Extract audio from MPEG broadcast videos and DVD content. Convert TV recordings to portable MP3 format.
Convert OGG to MP3
Transform OGG Vorbis files to MP3 for better device compatibility. Maintains audio quality during conversion.
Convert KGM to MP3
Upload Kugou KGM files and convert them to standard MP3 for playback on phones, laptops, and car stereos.
Convert KGG to MP3
Process KGG encrypted audio and turn it into MP3 for easier sharing, archiving, and editing.
Audio Conversion Best Practices
Choosing the Right Audio Format
Select MP3 for general use and music playback (best compatibility), WAV for professional editing (uncompressed), FLAC for archiving (lossless compression), or AAC for Apple devices (better quality than MP3 at same bitrate).
Optimal Quality Settings
For music, use 320 kbps MP3 or 256 kbps AAC for high quality. For podcasts and voice, 128 kbps is sufficient. Always use 44.1kHz sample rate for music and 48kHz for video sync.
File Size vs Quality Balance
MP3 at 128 kbps offers good quality at small file sizes (~1MB per minute). For premium quality, use 320 kbps (~2.5MB per minute). FLAC provides lossless quality but larger files (~5-8MB per minute).
What does this online audio converter do?
MP3 Audio Converter is a free web app that lets you convert audio files into MP3, WAV, FLAC, AAC, OGG, and M4A without installing software. It also extracts audio from common video files such as MP4, MOV, AVI, and MPEG, so you can save music, dialogue, or voice tracks in a standard format. To use it, upload a file, choose an output format, adjust quality settings like bitrate or sample rate if needed, and start the conversion. When processing finishes, you can download the converted file directly in your browser. The service also supports several Kugou-related uploads, including KGM, KGG, KGMA, and VPR, for users who need help opening protected audio sources. Files are sent over HTTPS, processed temporarily, and automatically deleted after the retention window to reduce long-term storage risk. That makes it useful for compatibility fixes, file-size reduction, and quick audio extraction on desktop or mobile.
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