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?
MP3 is one of the most widely used audio formats, offering lossy compression with good sound quality and small file size. It revolutionized music distribution and remains the standard for digital music playback across nearly all platforms and devices.
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.
Convert your .mp3 files to .spx 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 MP3 files into SPX in just a couple of clicks. No registration, no limits — and it’s 100% free.