Audio Trimmer
Cut audio files online, set start and end points, and export a clean clip.
Try it freeConvert M4A files, including many phone voice memos, into WAV locally in your browser. Download the WAV copy for editing, sharing, archiving, or transcription prep.
Start free, upload the prepared recording, and get an AI transcript with searchable text, speaker labels, timestamps, summaries, and TXT, DOCX, PDF, SRT, or VTT exports.
Continue editing or checking your file with a small set of relevant browser tools.
Cut audio files online, set start and end points, and export a clean clip.
Try it freePrepare speech audio for transcription with a browser-side voice-focused cleanup export.
Try it freeRemove low-volume silence from speech recordings and export a shorter WAV file.
Try it freeNormalize speech audio volume in your browser and export a louder, cleaner WAV copy.
Try it freeCheck audio duration, volume, clipping, silence, channels, and transcription readiness.
Try it freeUse this tool for M4A recordings from phones, voice memo apps, meetings, and interviews. The browser renders a WAV copy you can download.
M4A is a container, so support depends on the codec inside the file. Most AAC M4A files work in modern browsers, while unusual codecs may not decode locally.
After converting the recording, upload it to InstantTranscriber when you need an accurate transcript, captions, timestamps, or document exports.
Yes, if the M4A voice memo uses a codec your browser can decode. Many iPhone voice memos work in modern browsers.
No. Conversion runs locally in your browser. Transcription upload is separate.
WAV can be easier to use with editors, cleanup tools, and workflows that prefer a simple uncompressed audio file.