Opus, OGG and M4A
Typical messenger formats are read directly. iPhone voice memos (.m4a) and videos with sound (MP4, MOV) work too.
WhatsApp · Telegram · Signal
Convert a voice message to text
A five-minute voice message and you are on a quiet train? Save the message as a file, upload it here and read it in peace — with timestamps, so you can replay the parts that matter.
Free trial: 3 transcriptions per calendar month, each up to 10 minutes, no account — as plain text. Speaker separation (“who said what”) and files up to 4 hours are part of the paid offerings: day pass €2.99, credit €4.99, Pro €8.99/month.
Upload a voice messageHow it works
- Step 1
Save the message as a file
WhatsApp on iPhone: long-press the message, tap Forward, then the share icon and “Save to Files”. On Android: select the message, tap Share and save it to Files or Google Drive.
- Step 2
Upload the file
WhatsApp saves voice messages as .opus, Telegram as .ogg and Signal as .m4a or .aac. All three work without conversion.
- Step 3
Read or copy the text
The transcript appears with timestamps. Download it as TXT, Word or PDF — or read it right in the browser.
What you get
About 100 languages
The language is detected automatically — handy when family or friends send messages in another language.
Long messages in one go
Free up to 10 minutes per file. With a plan, merged message threads of up to 4 hours work too.
No account needed
The trial needs no email or phone number. The file is deleted after processing.
At a glance
- Free: 3 transcriptions of up to 10 minutes per calendar month, no account.
- Formats: MP3, WAV, M4A, OGG/Opus, FLAC, WebM, AAC, MP4 and MOV, up to 100 MB.
- A one-minute voice message is usually converted in a few seconds.
- Free trial without an account or login; plans from €2.99 one-off, no subscription required.
- Technical anti-abuse protection: currently up to five transcription starts per hour and files up to 100 MiB.
- Processed via OpenRouter with zero data retention: the AI providers store neither audio nor text; Sprechverlauf deletes audio files after processing and keeps transcripts only for signed-in users — encrypted.
- Premium: upload videos (MP4, MOV, WebM, up to 100 MiB), name speakers and review subtitles before exporting SRT or VTT.
- The video is deleted from our server one hour after upload. Your encrypted transcript stays in your account until you delete it. Only the extracted audio is sent for transcription.
Frequently asked questions
Can I convert a WhatsApp voice message to text directly?+
Yes. Save the message as a file (iPhone: Forward, Share, “Save to Files”; Android: Share to Files or Drive) and upload the .opus file here. No MP3 conversion needed.
Why not use WhatsApp's built-in transcription?+
WhatsApp offers transcripts only for some languages and devices, and you cannot export them as a file with timestamps. Here you get Word, PDF or TXT — in about 100 languages.
Who can listen to my voice message?+
No one. The file goes through OpenRouter with zero data retention to the recognition model; the AI provider stores neither audio nor text. Sprechverlauf deletes the file after processing.
Can I convert several messages at once?+
Each run handles one file. For many short messages, merge them into one file first — or upload them one after another.
Do I need an account or a subscription?+
Not for the free trial. You only need an account to buy a plan (day pass, credit or Pro) — a subscription is never required. Technical anti-abuse limits apply.
How long is processing data retained?+
Recognition runs through OpenRouter with zero data retention — the providers (Microsoft Azure, DeepInfra, Groq) store neither audio nor text. Sprechverlauf deletes uploaded audio files after processing, at the latest after two hours, and keeps the transcript in memory for at most two hours. Only signed-in users get an encrypted copy in their account, which they can delete at any time.
Video uploads, speaker names and subtitles+
Premium: upload videos (MP4, MOV, WebM, up to 100 MiB), name speakers and review subtitles before exporting SRT or VTT. The video is deleted from our server one hour after upload. Your encrypted transcript stays in your account until you delete it. Only the extracted audio is sent for transcription.