Compress MP3 to 1MB
100% free, fast, and runs entirely on your device. No sign up required.
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Why compress MP3 files to 1MB?
A 1MB file limit is the standard for a lot of web forums, older email attachments, and free tiers of some messaging apps. At one megabyte, you can comfortably fit an entire song if you are willing to sacrifice a little bit of audio quality.
This tool automatically calculates the exact bitrate needed to squeeze your MP3 under the 1MB limit without making it sound terrible.
How to use the 1MB compressor
Upload your MP3 file using the button above. The tool will check the total duration of your track and set the compression ratio accordingly. For a standard 3 minute song, the audio will still sound perfectly fine for casual listening.
Once the processing is done, you can download your new MP3. Since all the processing runs locally on your device, it is incredibly fast and you never have to worry about your files being uploaded to our servers.
Frequently Asked Questions
Will my song still sound good at 1MB?
Yes, as long as the song is not too long. A typical 3-minute pop song will sound great. If you try to compress a 30-minute podcast into 1MB, it is going to sound like a bad phone call.
Does this change the volume of the song?
No. The compressor only affects the bitrate and the frequency response. The overall volume and peak loudness of the track will stay exactly the same.
Can I email a 1MB file?
Yes, easily! Almost all email providers, including Gmail and Outlook, allow attachments up to 20MB or 25MB, so a 1MB file will send instantly.