Cut and trim MP3, WAV, FLAC, AAC, OGG, and 15+ audio formats. Create ringtones, edit podcasts, extract clips. Free, no quality loss.
Process files in seconds with our optimized servers
Frame-accurate cuts with intuitive timeline controls
Maintain original quality with smart re-encoding
12.5) or HH:MM:SS.sss format (e.g. 00:01:30.500) — pick the unit from the dropdown next to each field. The cutter keeps everything between start and start + duration; the rest is discarded.Audio cutting (also called trimming) removes the parts of a file you don't want and keeps the slice you do — without re-recording or running a full DAW. The same operation ffmpeg -ss START -t DURATION -c copy performs on the command line, exposed as a one-click browser tool. Common reasons:
.m4a to .m4r after download), and sync via Finder. Android tones have no length cap but most users keep them under 30 s.| Operation | What it does | Pick when |
|---|---|---|
| Cut / Trim | Keep ONE continuous segment from start_time to start_time + duration | You want one slice — a ringtone, a quote, a podcast segment |
| Multi-cut (run repeatedly) | Run the cutter once per output slice with different start + duration windows | You're splitting one long file into many separate clips |
| Split at silence | Auto-detect quiet gaps and emit each chunk separately | Splitting a tape rip / DJ mix into tracks by gap (not supported here — use a DAW) |
| Convert (no cut) | Change codec/format with no time edit | You just want format conversion — use Audio Converter instead |
| Compress | Shrink file size without changing duration | The cut isn't enough; you need a smaller file too — see Audio Compressor |
| Format | Typical source | Stream-copy cut (lossless)? |
|---|---|---|
| MP3 | Music, podcasts, voice recordings | Yes — frame-aligned to ~26 ms |
| WAV | DAW exports, studio recordings, dictation | Yes — sample-accurate (uncompressed PCM) |
| FLAC | Lossless music rips, archival audio | Yes — frame-aligned |
| AAC / M4A | iTunes, Apple Music DRM-free, iPhone Voice Memos | Yes — frame-aligned |
| OGG / OPUS | WhatsApp / Telegram voice notes, game audio, Discord recordings | Yes — page-aligned |
| WMA | Older Windows Media recordings, Sony NetMD rips | Re-encode usually needed |
| AIFF | macOS production audio, Logic Pro exports | Yes — sample-accurate |
| AC3 / EAC3 | Movie soundtracks ripped from DVD / Blu-ray | Yes — frame-aligned |
| AMR | Older phone voice memos, GSM-era recordings | Yes — frame-aligned |
| AU | Sun / NeXT audio, legacy Unix recordings | Yes |
Stream-copy cut means the audio bytes pass through untouched — same bitrate, same codec, zero quality loss. If you change output format or sample rate, the cutter re-encodes, which introduces one generation of lossy compression (negligible for most listening but visible in spectrum analysis).
If you keep the same output format and don't touch codec/bitrate settings, no — XConvert cuts via stream copy, the same -c copy operation ffmpeg performs. The audio bytes are sliced at codec frame boundaries and rewritten into the new container with the original bitrate intact. If you change the output format (MP3 to AAC, FLAC to MP3, etc.) or alter the bitrate, you incur one generation of re-encoding — fine for casual listening, audible in side-by-side comparison for trained ears.
Sample-accurate for uncompressed formats (WAV, AIFF, FLAC). For MP3, AAC, and OPUS, the cut snaps to the nearest codec frame: about 26 ms for MP3, 21 ms for AAC, 20 ms for OPUS. For most uses (ringtones, podcast trims, clip extraction) this is imperceptible. If you need true sample-accurate cuts on a compressed source, decode to WAV first, cut, then re-encode.
Cut the segment to 30 seconds or less (Apple's documented max for GarageBand-exported tones; iTunes will sync up to 40 s but enforces the cap). Set output format to M4A. After download, rename the extension from .m4a to .m4r. Drag the file into Finder (macOS Catalina+) or iTunes (Windows / older macOS) with your iPhone connected, then pick the tone under Settings > Sounds & Haptics > Ringtone. Note that iOS plays only the first 20 seconds during an actual incoming call regardless of file length.
Run the cutter once per output slice. Each run takes a different Start time + Duration and produces a separate file — three runs gives you three clips. For a long DJ set or live recording with many cut points, this is faster than it sounds because uploads stay in browser memory between runs. For audio merge after cutting, the workflow is cut → cut → cut → use a separate merge tool (or a DAW like Audacity for free).
Cutting happens in your browser, so the limit is upload size and connection speed and patience for the initial upload. Multi-GB FLAC archives and full-length DJ mixes work; the upload is the slow part. There's no per-file MB cap imposed by XConvert and no quantity limit on batch jobs.
MP3 is a lossy codec that uses overlapping windows — each frame's audio depends slightly on neighbors. If the cut lands mid-window the decoder reconstructs the boundary from zero, producing a brief click. Two fixes: (1) re-encode the output (set output format to MP3 with a new bitrate — the encoder smooths the join), or (2) export to a lossless format (WAV / FLAC) where window overlap doesn't apply. The same issue exists in every MP3 editor; AAC and OPUS handle it more gracefully because of their lapped-transform design.
Yes. Set Start time + Duration under Trim, then change the output extension under To Extension and adjust Audio Codec, bitrate, sample rate, or channels. The cutter trims first (cheap operation) then re-encodes the remainder, which is faster than encoding the entire source and trimming after. Use this for MP3 → M4A ringtones, WAV → MP3 compression after cutting silence, FLAC → AAC for storage.
For MP3, M4A, FLAC, and OGG: ID3 / Vorbis comment tags usually survive a stream-copy cut. Embedded artwork survives in most cases but can be stripped if the encoder repacks the metadata block. WAV has no standard tag container, so any RIFF INFO chunks may or may not transfer. If preserving artwork matters, verify the output in your music player before deleting the original.
Yes. No sign-up, no email required, no watermark on the audio output, no file count limits, no daily quota. The cutter runs as a managed conversion on our servers — the file is uploaded, processed on our edge servers, and the result returned for download. Files are deleted from our servers after processing. If you need to compress the output further, see Audio Compressor; to convert format without cutting, use Audio Converter; to trim video instead, see Video Cutter.