You can drag and drop it too — we’re flexible!
We’ll take care of the rest — it only takes a few seconds.
Just download it and enjoy. Easy, right?
SPX is an audio file encoded with the Speex codec, which is designed for compressing speech rather than music. It offers low bitrates and good voice clarity, making it suitable for VoIP, podcasts, and internet telephony. SPX is now largely replaced by Opus.
AAC stands for Advanced Audio Coding and is a lossy audio format known for its high sound quality at lower bitrates. It’s commonly used by streaming platforms and devices like iTunes, YouTube, and iPhones. Compared to MP3, AAC offers better audio performance at similar file sizes.
Convert your .spx files to .aac right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your SPX files into AAC in just a couple of clicks. No registration, no limits — and it’s 100% free.