Audio Converter: MP3 AAC OPUS

Audio Converter changes the format of your music, voice recordings and video soundtracks right on your Android phone. Convert M4A, WAV, FLAC, OGG and other audio to MP3, AAC (M4A), M4R, OPUS, WAV or FLAC, then cut, join and tidy up the result with the tools beside it. Conversion runs on your device, so your files are not uploaded to convert them. No sign-up, no watermark.

🎵 CONVERT AUDIO — MP3, AAC, M4R, OPUS, WAV, FLAC
• Output: MP3, AAC (M4A), M4R ringtone files, OPUS (Android 10+), WAV (16-bit PCM) and FLAC (Premium, on phones with a FLAC encoder)
• Input: any audio your phone can decode, typically MP3, M4A, AAC, OGG, OPUS, WAV, FLAC, AMR and 3GP
• Bitrate 64, 96, 128, 160, 192, 256 or 320 kbps, 192 by default
• Sample rate 8, 16, 22.05, 44.1 or 48 kHz, or keep the source rate
• Mono, stereo or same as source; volume up to 300%
• Rename the output, trim the start and end, or trim silence
• Effects: fade in and out, normalize loudness, reduce noise

📚 BATCH CONVERT IN THE BACKGROUND
• Convert 5 files per run with one set of options
• Run in background and keep using your phone; progress shows in a notification
• "Last used" brings back your previous settings in one tap
• Premium: larger batches, whole albums, saved presets and an unlimited queue

🎬 VIDEO TO MP3
• Switch the picker to Video to turn the sound of MP4, MKV, MOV, 3GP or WEBM files into MP3 or any other output
• Extract audio from a single video; Premium can copy the original audio track without re-encoding

✂️ CUT, JOIN AND MAKE RINGTONES
• Cut audio with start and end handles, or type the times as mm:ss
• Join audio files in the order you set
• Set a clip as ringtone, notification sound or alarm straight from the result screen

🧰 AUDIO TOOLBOX
• Voice recorder, multi-cut, split file, audio speed and volume boost
• Audio mixer and add music to video
• Karaoke (vocal removal) and voice changer
• Song info: edit the title, artist, album and cover art of an MP3, or search for the details online

📁 YOUR FILES
• Saved to Music/Audio Converter, visible in music players and file managers
• Recent files: play, share, rename, set as ringtone, delete, or use as the source for another tool
• The original file is never changed
• Open a file from your file manager with Share → Audio Converter

💎 FREE, CREDITS AND PREMIUM
• Free: every format except FLAC, up to 192 kbps, 5 files per run, one background job per session
• Credits cover extras on the free plan: 256 or 320 kbps costs 1 credit per file, effects 1 per file, each file past 5 costs 1, voice changer 1 and karaoke 2 per file
• New installs get 5 credits and a short ad adds 1, up to 5 a day. Failed or cancelled exports use none
• Premium removes ads and every credit cost, and adds FLAC, whole albums, saved presets, multi-segment cuts and lossless audio extract. Choose a subscription or a one-time purchase on Google Play

🔁 POPULAR CONVERSIONS
M4A to MP3, WAV to MP3, FLAC to MP3, OGG to MP3, AAC to MP3, AMR to MP3, OPUS to MP3, MP4 to MP3, MKV to MP3, MP3 to M4A, MP3 to OPUS, MP3 to WAV, WAV to FLAC and M4A to M4R.

❓ QUICK ANSWERS
• Does converting need internet? No, conversion runs on your phone. Ads, purchases and the optional song info search use the connection.
• Which bitrate should I pick? 192 kbps suits most music. 96 kbps mono is plenty for speech.
• Are tags copied? No. Add the title, artist and cover with Song info after converting.
• Where are my files? In Music/Audio Converter.

Please convert only files you own or have the right to use.

Recent changes:
Faster: converting long MP3 and AAC files is now several times quicker.
Clear pricing: options that use credits show ⚡ before you start, Premium-only ones show ★.
New: AMR-NB format, 32/48 kbps for small voice files, loop the music when adding audio to a video, better names for picked videos.