Convert audio: MP3, WAV, FLAC, AAC & M4R ringtones

Start from the destination, because that decides the right target. MP3 is the universal lossy format that plays on anything and suits podcasts, sharing, and general use. AAC (and M4A) is the modern lossy choice with better quality at the same size, common on Apple devices and streaming. OGG and OPUS are efficient open formats favored on the web and in voice and chat apps, with OPUS especially strong for speech.

On the lossless side, FLAC compresses without discarding any sample, so it is the archival and audiophile choice; WAV and AIFF are uncompressed and are what many editors and DAWs want as a working master; ALAC is Apple's lossless equivalent. Converting a lossy file to a lossless one cannot restore detail that was already discarded — it only repackages what is there — so keep a lossless master when you have one.

Novus Convert lists a broad set of audio inputs — MP3, WAV, FLAC, AAC, M4A, OGG, OPUS, WMA, AMR, AC3, DTS, ALAC, AIFF, and M4R — and each source offers its own set of validated outputs. Because not every source-to-target pair among them is identical, confirm the specific route you need in the /conversions directory before you queue the file.

Each file is identified by its signature rather than its filename, so a track saved with the wrong extension is read as what it actually is and offered the correct outputs. If the output you expected is missing from a row, the file is usually not the format its name claims.

Open convert.novusstreamsolutions.com/convert and add your audio by dragging it in or picking it with the file chooser. The queue accepts several files at once, each row with its own output selector, so a folder of tracks can be converted in one batch — set the row to the format the destination wants. Everything runs through the local WebAssembly FFmpeg build, so the audio is transcoded on your device.

Pick the target deliberately. For a podcast host or general sharing, MP3 or AAC keeps files small; for an editor's working master, WAV or FLAC preserves the samples; for the web or a voice app, OGG or OPUS is efficient. Because the format genuinely changes, a long recording takes real time to re-encode, though audio is far lighter than video.

An iPhone ringtone is an M4R file, which is essentially AAC audio in a ringtone container, and iOS only accepts a custom ringtone in that format and within a short length. Trim your clip to the segment you want as the ringtone first, in any editor, then bring that short clip to Novus Convert and choose M4R as the output on its row.

Confirm the M4R route for your source in /conversions, run the conversion, and save the validated M4R. Loading it onto the phone is an iOS and Finder or iTunes step that happens outside the browser — Novus Convert makes the ringtone file; the phone decides how to install it. Keeping the clip short matters, because iOS rejects an over-length ringtone regardless of format.

Two settings shape the result. Going to a lossy format trades size for a small, usually inaudible quality loss; going to a lossless or uncompressed format keeps every sample but produces a much larger file — a WAV or FLAC master is many times the size of the MP3 of the same recording. Choose based on whether size or fidelity matters more for the destination.

Processing happens in the tab's memory, so very long recordings ask more of the browser than short clips, though audio is far lighter than video. Daily download allowances are tracked in your browser and reset by the local calendar day, with the remaining count shown beside the download control and the current figures on the Help page — the app is free, but free is not unlimited.

The download control appears only after the result passes validation, so a file you can download is a genuine, decodable audio file of the promised type rather than something with the right extension. A row that fails validation fails alone, leaving the tracks that already succeeded untouched.

Results live behind temporary object URLs in the current session and vanish when you remove a row or close the tab, so save each converted track or ringtone before you leave. Because the source never left your device, re-running a row recreates a lost result in moments.