Accurate AI transcription
Powered by the same speech-to-text engine behind CaptionX's caption tools — clean, readable text from your MP3 with sentence-level timing, not a rough auto-caption dump.
Upload an MP3 — or any other audio or video file — and get an accurate text transcript in seconds. Read it on screen, copy it, or download as TXT, SRT or VTT — free.
MP4, MOV, WebM, MP3, WAV, M4A, FLAC, or OGG · 100+ languages
Leave on Auto-detect, or pick the spoken language for a hint.
Drag and drop your file here, or click to upload
MP4, MOV, WebM, MP3, WAV, M4A, FLAC, OGG
Most “free” MP3 transcription sites cap you at a minute or add a watermark. This one gives you the full transcript — text, SRT and VTT — with 5 free transcriptions and no credit card.
Powered by the same speech-to-text engine behind CaptionX's caption tools — clean, readable text from your MP3 with sentence-level timing, not a rough auto-caption dump.
Read the transcript on screen, toggle timestamps on or off, copy it, or download it as a .txt transcript, an .srt subtitle file, or a .vtt caption file.
Convert MP3 and other audio to text in 100+ languages online. 5 free transcriptions — no install, no watermark, no credit card.
How it works
What people use it for
Transcribe at scale
The free plan covers 5 transcriptions in total, up to 5 minutes each. CaptionX Pro gives you unlimited transcriptions of MP3s up to 2 hours, so every episode, interview and voice memo gets transcribed instead of typed out by hand.
CaptionX Pro includes
Transcribe any audio file — WAV, M4A, FLAC, OGG and more — into clean, copyable text.
Open toolTurn an audio recording straight into a timed SRT subtitle file, ready to share.
Open toolUpload a podcast or MP3 and get a timed SRT caption file ready to share.
Open toolUpload an MP4, MOV or other video and get an accurate text transcript in seconds.
Open toolTurn audio or video into a clean SRT subtitle file — free, no watermark.
Open toolTranslate a transcript or SRT into 89 languages with timings preserved.
Open toolUpload your MP3 file using the tool on this page, select the spoken language, and click Transcribe to Text. Your transcript appears on screen in seconds — you can read it, copy it, or download it as a TXT, SRT or VTT file. A free CaptionX account includes 5 transcriptions — no credit card needed.
Yes — it's free. You get 5 free transcriptions with a free CaptionX account, and no credit card is needed. Each MP3 can be up to 5 minutes. No watermark, ever. After your 5 free transcriptions, a CaptionX subscription keeps them unlimited, with MP3s up to 2 hours each.
Yes. It works in your browser — there's nothing to download or install. Just drop your MP3 in and the transcript is ready in seconds on any device.
It uses the same AI speech-to-text engine behind CaptionX's caption tools, so a clear MP3 produces clean, readable text with sentence-level timing. Crisp recordings with little background noise give the best results.
You get all three. Copy the transcript to your clipboard, or download it as a plain-text .txt file, an .srt subtitle file, or a .vtt caption file — all generated instantly from the same MP3.
Yes. The converter supports 100+ languages including Spanish, Portuguese, French, German, Arabic, Hindi, Japanese, Korean, Chinese, Indonesian and more. Just pick the spoken language before you transcribe.
Free accounts can transcribe MP3s up to 5 minutes. CaptionX Pro transcribes MP3s up to 2 hours each, as many as you like. For anything longer, split it into parts.
Skip hours of typing: upload an MP3 above for a free transcript. Need more than 5, or an MP3 over 5 minutes? CaptionX Pro gives you unlimited transcripts of MP3s up to 2 hours.