Free MP3 Converter — Convert, Compress & Edit Audio Online
Convert WAV, M4A, MP4, FLAC and 90+ formats to MP3, extract audio from video, compress, trim and normalize MP3, and more. No signup required — free to use.
Drop your audio files here
or click to select - then choose your output format
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What is mp3.now?
mp3.now is a free online MP3 converter and audio toolkit for everyday sound work — convert WAV, M4A, MP4, MOV, FLAC, AAC, OGG, WMA, AIFF, OPUS and 90+ other formats to MP3 in one click, extract audio from video, compress MP3 files to save space, and run quick edits like trimming, merging, volume normalization and bitrate changes. Everything runs in the cloud — no software install, no signup, no watermarks.
Built for podcasters, musicians, students, office workers and anyone who hits a "wrong file format" error, mp3.now handles the messy real-world cases: pull the soundtrack out of an MP4 or MOV video, turn iPhone voice-memo M4A files into MP3 for any player, convert a FLAC album to MP3 for a car stereo, trim a song down to a ringtone, or merge a folder of clips into one continuous track. Need a phone ringtone? Our MP3 to M4R tool creates iPhone-ready ringtones in seconds.
The editing tools layer handy audio processing on top of the converter: trim or cut an MP3 to the exact seconds you need, merge several tracks into one file, normalize loudness so everything plays at an even volume, and change the bitrate to balance quality against file size. Every tool is free to try, with sensible daily limits and an optional Premium plan for power users.
Privacy is the default. Files are encrypted in transit, stored only as long as the conversion needs them, and automatically deleted within 24 hours (longer on paid plans). We don't read, scan, train models on, or sell your content. Nothing about your file ever leaves the conversion pipeline. If you want files to disappear sooner, just close the tab — the cleanup task handles the rest.
Browse MP3 tools
MP3 Converters
Convert between 100+ audio and video formats — WAV, M4A, MP4, FLAC, AAC, OGG and more.
- WAV, M4A, FLAC, AAC to MP3
- MP4, MOV, MKV to MP3 (video)
- MP3 to WAV, M4A, OGG, FLAC
- MP3 to M4R iPhone ringtone
MP3 Editing Tools
Quick audio edits — trim, merge, normalize volume, change speed, and downmix to mono.
- MP3 Cutter / Trim
- Merge MP3
- Normalize Volume
- Speed Changer & Stereo to Mono
Compress & Bitrate
Shrink MP3 files to a target size or re-encode at exactly the bitrate you want.
- Compress MP3
- Change Bitrate
- MP3 to 320kbps
- MP3 to 128kbps
Popular MP3 editing tools
MP3 Cutter / Trim
Merge MP3
Normalize Volume
Speed Changer
Free MP3 tools
MP3 Normalizer
MP3 Compressor
MP3 Bitrate Changer
MP3 Cutter
Popular conversions
Convert MKV to MP3 Online
Convert WMA to MP3 Online
Convert MP3 to 320 kbps Online
Convert WAV to MP3 Online
Convert OGG to MP3 Online
Convert Opus to MP3 Online
Trim & Cut MP3 Online
Convert MP3 to M4A Online
All supported audio formats
MP3 is the most widely used audio format in the world. It uses lossy compression to dramatically reduce file size while keeping good sound quality at your chosen bitrate - Ideal for music, podcasts, and voice recordings. Supported by virtually every phone, car stereo, browser, and media player.
Convert to and from MP3
Frequently asked questions
What Is the File Size Limit?
How to Convert MP4 to MP3: Extract Audio from Video
mp3.now Premium Plans: Pricing and Features Comparison
Is mp3.now Free to Use? No Signup Required
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Why Choose mp3.now
Fast Conversions
Most conversions complete in under 5 seconds, powered by distributed workers.
Private & Secure
Files are processed over HTTPS and permanently deleted after 24 hours.
Works on Mobile
Fully responsive - Works on phones, tablets, and desktops with no app install.