Trim MP3, WAV, FLAC, and OGG with millisecond precision. Make ringtones for iPhone and Android , cut voice memos, pull samples, clip WhatsApp voice notes. Shorten the start and end of a recording, or mark sections anywhere in the middle to remove — a cough, a false start, dead air . Several at once, and one trimmed file back. Merge tracks end to end into one continuous file. Assemble podcast episodes (intro + interview + outro), join audiobook chapters, combine voice recordings — with an optional crossfade. Layer tracks so they play together. Add background music under a voiceover, stack a vocal over an instrumental, and balance per-track volume — a mixing console in your browser. Audio Converter Convert WAV to MP3, FLAC to MP3, or OGG to WAV in seconds. High-quality 192 kbps (variable bitrate) MP3 encoding. Shrink files for email, phone storage, or web upload. Audio Extractor Pull the audio track out of an MP4, MOV or WebM you already have and save it as MP3, WAV, FLAC or OGG. Your own video files only — no links, and nothing is uploaded. Transpose a song to your vocal range, slow down guitar solos to learn by ear, speed up lectures, make nightcore or slowed-and-reverb edits. Live preview before export. Give dry recordings space and depth. Adjustable room size, damping, and mix, rendered with a natural tail — for vocals, voiceovers, and instruments. Preview before export. Silence Remover Cut dead air out of podcasts and voice memos automatically, or split a long recording at every pause. Adjustable threshold, onset-safe padding, no watermark. Make quiet MP3s and recordings louder — lossless maximize to the clipping ceiling, or a fixed boost up to +24 dB with limiter protection. Plus fade, reverse, and stereo/mono tools in the menu. Record voice memos, meetings, interviews, podcast drafts, and singing practice from your mic. Trim on the waveform and export as MP3, WAV, FLAC, or OGG. Volume Normalizer Normalize loudness to -14 LUFS (Spotify), -16 LUFS (podcast), or any custom target. Measures integrated loudness and applies gain with clipping protection.

Remove background noise from podcasts, interviews, Zoom recordings, and voice memos. AI noise suppression optimized for speech — runs locally, no upload. Make custom ringtones for iPhone and Android. Trim to 30 seconds, add fade in/out, and export as MP3 — ready to set as your ringtone. More audio tools Smooth starts & ends Frequently Asked Questions Is cut.audio really free? Yes. All tools are free — no premium tier, no ads, no watermarks, no account. The only cap is technical, not commercial: files up to one hour long. Do my files get uploaded to a server? No. Your audio never leaves your device. Everything is processed locally in your browser. No data is sent anywhere. What audio formats are supported? MP3, WAV, FLAC and OGG are read directly, and you can convert freely between them. M4A, AAC, Opus and AMR — iPhone voice memos and WhatsApp notes — are read the same way, with the same one-hour limit and no conversion step in between. Output is always MP3, WAV, FLAC or OGG. What's the maximum file size? There's no server-side limit since files aren't uploaded, and no watermark or usage quota either. What there is, is a length ceiling: about an hour per file, the same for every format, because the work happens in your browser's memory. Size itself is rarely the problem — most devices handle several hundred MB without issues. Past the hour, CutDesk opens the file on the desktop. Does it work on mobile? Yes. cut.audio works in any modern browser including Safari on iPhone/iPad and Chrome on Android. Can I make iPhone ringtones? Yes. The Audio Cutter and Ringtone Maker both let you trim to 30 seconds and export as MP3, ready to use as a ringtone on iPhone or Android.