Audio Format Converter

Audio Format Converter

Professional-grade audio conversion in your browser

100% Local Processing
Completely Free
No Account Required
No Ads
⚠️ Large files detected: Converting very large audio files (500MB+) may take longer and use significant memory. Performance depends on your device's capabilities. For reference: a typical 5-minute song at CD quality is ~50MB.
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Drag & drop audio files here
or click to browse
Supports: WAV, MP3, MP4, M4A, OGG, FLAC, AAC, WEBM
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Conversion Complete!
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Privacy & Quality Guaranteed:
  • All processing happens 100% locally in your browser using professional-grade algorithms
  • Your audio files never leave your device and are never uploaded to any server
  • MP3 encoding uses LAME (industry standard, same as Audacity and professional audio software)
  • WAV provides uncompressed, bit-perfect lossless quality

Frequently Asked

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How does this online audio converter work?

This is a browser-based audio converter that processes everything locally on your device using the Web Audio API and professional encoding libraries. When you upload a file, your browser decodes the audio, processes it in memory, and re-encodes it to your chosen format—all without uploading anything to a server. It’s essentially running professional-grade audio software directly in your web browser.
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Is this converter safe to use?

Absolutely. Your audio files never leave your device—there are no uploads, no servers, and no cloud processing. Everything happens 100% locally in your browser. Your files remain completely private and secure on your computer. We don’t collect, store, or have any access to your audio files whatsoever.
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Do I need to install any software to use this converter?

No installation required (and no account neither!)
This is a completely free and web-based audio converter that runs directly in your browser.
It works on any modern browser (Chrome, Firefox, Safari, Edge) on Windows, Mac, Linux, and even mobile devices. Just open the page and start converting—no downloads, no plugins, no registration needed.
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Why would I need to convert audio files to different formats?

Common reasons to convert audio formats include:
• Device compatibility: Some devices only play specific formats (e.g., older car stereos need MP3)
• Reduce file size: Convert WAV to MP3 to save storage space or enable faster uploads
• Quality preservation: Convert lossy formats to WAV before editing to prevent quality degradation
• Streaming optimization: Convert to OGG for web players or podcasts
• Professional workflows: Studios often require WAV or FLAC for mastering
• Platform requirements: Social media, websites, and apps often have specific format requirements

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What's the difference between lossless and lossy audio formats?

Lossless formats (WAV, FLAC) preserve 100% of the original audio data—perfect quality with no compression artifacts, but larger file sizes. Think of it like a ZIP file for audio: you can uncompress it back to the exact original.

Lossy formats (MP3, OGG, M4A) remove audio information that’s less audible to human ears, creating much smaller files at the cost of some quality loss. At high bitrates (256-320 kbps), this loss is imperceptible to most listeners.

Use lossless for archiving, editing, or audiophile listening. Use lossy for everyday listening, streaming, and saving storage space.

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What is bitrate? What's the difference between 128 kbps, 192 kbps, and 320 kbps?

Bitrate measures how much data is used per second of audio. Higher bitrate = better quality but larger file size:
• 128 kbps: Good quality, suitable for podcasts and voice. Smaller files (~1MB per minute)
• 192 kbps: High quality, excellent for most music. Standard for streaming services (~1.5MB per minute)
• 256 kbps: Very high quality, indistinguishable from CD for most listeners (~2MB per minute)
• 320 kbps: Maximum MP3 quality, -arguably- no audible compression artifacts (~2.5MB per minute)

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What is an OGG file?

OGG (usually with Opus or Vorbis codec) is an open-source, royalty-free audio format that delivers better sound quality than MP3 at the same file size. It’s widely used for streaming, gaming, and web audio because it’s more efficient than MP3. While not as universally compatible as MP3, it’s supported by most modern devices, browsers, and media players including VLC, Chrome, Firefox, and Android devices.

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Is this better than Audacity, Convertio, or other converters?

For MP3 conversion, we use the same LAME encoder as Audacity, so the output quality is identical. Unlike online services like Convertio, CloudConvert, or Zamzar, your files never get uploaded to external servers—everything processes locally, which is faster, more private, and has no file size limits. Compared to desktop software like Audacity or Handbrake, our converter is instant (no installation needed) and simpler for basic format conversion, though those programs offer more advanced editing features.
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Can I convert multiple audio files at once (Batch conversion)?

Yes! This converter supports batch conversions. Simply drag and drop multiple files or select multiple files when browsing. All files will be converted to the same output format and quality settings you choose. When done, if you converted multiple files, they’ll automatically be packaged into a convenient ZIP file for easy download.
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How long does audio conversion take?

Conversion speed depends on the format:
• WAV (lossless): Nearly instant—typically under 1 second regardless of file length
• OGG: Very fast—about 1-2 seconds per minute of audio
• MP3: Moderate—approximately 3-5 seconds per minute of audio
A typical 3-minute song converts to MP3 in about 10-15 seconds. Actual speed varies based on your device’s processing power.

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What is an audio codec?

An audio codec (compressor-decompressor) is the technology that encodes and decodes audio data. It’s the “engine” inside audio formats that determines how sound is compressed and what quality you get. For example:
• MP3 format uses the MPEG-1 Audio Layer III codec
• M4A format uses the AAC (Advanced Audio Coding) codec
• OGG format uses Opus or Vorbis codecs
The codec determines the sound quality, file size, and compatibility. Different codecs excel at different tasks—some prioritize file size, others prioritize quality, and some balance both.

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What is an M4A file?

M4A is an audio file compressed using the AAC (Advanced Audio Coding) codec, commonly used by Apple products like iTunes, iPhones, and iPads. It generally provides better sound quality than MP3 at similar file sizes and is the default format for music purchased from the iTunes Store. M4A files play on most modern devices but may have limited support on older hardware compared to MP3.

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What is a WEBM file?

WEBM is an open-source media container format developed by Google, designed specifically for web use. For audio, it typically uses the Opus codec, which delivers excellent quality at low bitrates—making it ideal for streaming and web applications. WEBM is natively supported by all modern web browsers (Chrome, Firefox, Edge) and is commonly used for HTML5 audio/video, though it has limited support on traditional media players and older devices.
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What is a FLAC file?

FLAC (Free Lossless Audio Codec) is a lossless compression format that reduces file size by about 50% compared to WAV while preserving 100% of the original audio quality. It’s the preferred format for audiophiles, music archiving, and high-fidelity audio collections. FLAC files are larger than MP3 but offer perfect, bit-for-bit accurate reproduction of the original recording. Supported by most modern media players, though less common on portable devices than MP3.

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