--- title: "Audio Trimmer - Cut Audio Online for Free | CanDoYa" description: "Trim audio online with precise start and end times, preview the selected clip, and download a private WAV. No upload, account, or watermark." url: https://candoya.com/tools/audio-trimmer/ locale: en type: browser-tool --- # Free Audio Trimmer Category: Social & Creator ## What is an audio trimmer? An audio trimmer cuts a chosen section from an MP3, WAV, M4A, OGG, or another common audio file. Set exact start and end times, preview the highlighted clip, then download a WAV. The source and result stay in your browser, so recordings are not uploaded to a server. The waveform gives you a visual map of quiet gaps, speech, and musical peaks. Drag the IN and OUT points for a quick cut, type timestamps to the nearest millisecond for precision, or move the player and use its playhead as either boundary. The first export loads a WebAssembly audio engine, trims only the selected interval, and writes a 44.1 kHz stereo WAV. WAV avoids another lossy compression pass and works well in editors, but it is usually larger than the original MP3 or M4A. ## How to use it 1. **Choose your audio** - Drop an MP3, WAV, M4A, FLAC, OGG, AAC, or another common audio file into the trimmer. 2. **Set the cut points** - Drag the IN and OUT controls, enter exact timestamps, or set either boundary from the audio playhead. 3. **Preview the selection** - Play only the highlighted interval and adjust the boundaries until the clip starts and ends cleanly. 4. **Trim and download** - Create the clip locally, listen to the result, then download the trimmed WAV. ## Who it's for - **Podcast and interview editors** can isolate a quote, answer, or clean excerpt before transcription. - **Musicians and dancers** can cut a practice loop or rehearsal cue from a longer track. - **Creators** can shorten voiceovers, sound effects, and music beds for a video timeline. - **Students and researchers** can keep only the useful section of a lecture or field recording. ## Expert note Compressed audio uses frames that do not always align with the exact millisecond you choose. This tool decodes and re-encodes the selected interval as PCM WAV, which gives cleaner boundary accuracy than copying compressed MP3 or AAC frames without re-encoding. ## Frequently asked questions ### Is my audio uploaded? No. File reading, waveform decoding, trimming, preview, and the result all happen inside your browser tab. The first trim downloads the audio engine code, but your recording is not sent with that request. Refreshing or closing the tab releases the temporary local file URLs. ### Is this audio trimmer free? Yes. You can trim and download audio without an account, subscription, credit limit, or watermark. There is no server queue because processing happens on your device. Your practical limits are the memory and processing speed available to the browser. ### What file size limits apply? The conservative cap adapts to the device: 100 MB on mobile or lower-memory hardware, 250 MB on a typical desktop, and 500 MB on a high-memory desktop. Large compressed files expand during decoding, and the WAV result can use much more memory than the source. ### Which audio formats can I trim? The picker accepts common audio formats including MP3, WAV, M4A, AAC, FLAC, OGG, Opus, AIFF, MP4 audio, and WebM audio. Preview support depends on the browser and codec. If the duration cannot be read, convert the source to MP3, WAV, M4A, or OGG first. ### Can I trim an MP3 to an exact time? You can enter start and end times to the nearest millisecond. The tool decodes the selected interval and exports it as WAV instead of copying whole MP3 frames, which avoids the larger timing jumps common with lossless stream-copy cuts. Encoders can still add a tiny amount of padding. ### Why does the download use WAV? WAV stores uncompressed PCM audio, so the trimmed file is broadly playable and suitable for further editing without another lossy compression pass. It is usually larger than MP3, M4A, or OGG. You can convert the WAV later when a smaller delivery file matters more. ## Related tools - [Audio Speed Changer](https://candoya.com/tools/audio-speed-changer/) - [Audio Waveform Image](https://candoya.com/tools/audio-waveform-image/) - [Audio to Text](https://candoya.com/tools/audio-to-text/) - [Audio Joiner](https://candoya.com/tools/audio-joiner/) --- *Markdown edition of , published for AI agents and other automated readers. Index of key pages: .*