Convert MP3 to AAC Online
Free, easy-to-use MP3 to AAC converter. Transform your MP3 audio files to more efficient AAC format with better quality at comparable bit rates.
MP3 to AAC Converter
Convert your MP3 files to AAC format quickly and easily. Upload your file and download the result.
Max file size: 50MB
Why Convert MP3 to AAC?
MP3 has been the standard audio format for decades, but AAC (Advanced Audio Coding) offers several advantages. AAC was designed as the successor to MP3 and generally provides better sound quality at similar bit rates. Converting from MP3 to AAC can be beneficial for many modern devices and services that are optimized for AAC playback.
Benefits of Converting MP3 to AAC
- Better quality at similar file sizes - AAC typically offers better audio quality than MP3 at the same bit rate.
- Better compatibility with Apple devices - AAC is the native audio format used by Apple products like iPhones, iPads, and iTunes.
- More efficient compression - AAC can achieve smaller file sizes while maintaining good audio quality.
- Better handling of higher frequencies - AAC performs better with high-frequency sounds than MP3.
- Support for multichannel audio - AAC offers better support for surround sound configurations.
How to Convert MP3 to AAC Using Our Tool
- Upload your MP3 audio file using the upload button or drag and drop functionality.
- Our converter will automatically select AAC as the output format.
- Solve the simple captcha to verify you're human.
- Click "Convert MP3 to AAC" to start the conversion process.
- Once conversion is complete, download your new AAC file.
About MP3 and AAC Format Differences
| Feature | MP3 | AAC |
|---|---|---|
| Audio Quality | Good | Better at comparable bit rates |
| Compression Efficiency | Moderate | Higher |
| Multi-channel Support | Limited | Better |
| Development Era | 1990s | Late 1990s to present |
| Primary Use | General audio compression | Digital audio broadcasting, streaming services |
When converting from MP3 to AAC, it's important to understand that you're actually transcoding from one lossy format to another. Both MP3 and AAC are lossy audio formats that compress audio by removing certain information deemed less perceptible to most listeners. Converting between these formats does involve a small quality loss, but the difference is typically minimal.
For optimal results, our converter uses high-quality settings for AAC encoding to maintain the best possible sound quality. Since AAC generally provides better quality at comparable bit rates, the resulting files often sound very close to the original MP3s, while potentially taking up less storage space.
Other Audio Conversion Options
Frequently Asked Questions
Will I lose audio quality when converting from MP3 to AAC?
When converting from one lossy format (MP3) to another lossy format (AAC), there is typically some minor quality loss due to the transcoding process. However, since AAC is generally more efficient than MP3, the quality difference is often negligible at moderate to high bit rates. Our converter uses high-quality AAC encoding to minimize any perceptible loss in audio quality.
What bit rate does the converter use for AAC output?
Our converter analyzes your input MP3 file and selects an appropriate AAC bit rate to maintain similar quality. For standard audio, this is typically around 128-192 kbps, which provides excellent quality for most listening scenarios. For higher-quality MP3 inputs, we'll use higher AAC bit rates to preserve the audio fidelity of your original file.
Are AAC files smaller than MP3 files?
In general, AAC files can achieve similar audio quality to MP3 files at bit rates that are about 70-80% of what would be required for an MP3 file of comparable quality. This means that yes, for similar perceived audio quality, AAC files are typically smaller than MP3 files. However, the exact file size reduction depends on many factors including the specific audio content and the encoder settings used.