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For anyone with a recording to turn into text

Transcribe audio to text

Upload an audio file and Klang turns it into text: separated by speaker, timestamped, and linked to the recording so you can check any line in a second. Then export it, summarise it or ask it questions. The free plan includes transcription.

MP3, WAV, M4A, AAC, OGG, OPUS, AIFF and WMA, up to 10 GB per file

19 languages, including recordings that switch language

Free plan; Word, Excel, SRT and VTT export on Pro

From audio file to text in three steps

  1. Upload the recording

    Select Upload new in the Klang web app and add one file or several at once, up to 10 GB each. No file yet? Record straight from your browser or with the Klang mobile app, and the recording is transcribed when you stop.

  2. Set language and speakers

    Leave the language on Automatic, which also handles recordings that switch language, or pick it to help short clips and strong accents. If voices are similar, set the number of speakers (1 to 10) instead of leaving it on Automatic.

  3. Check, then export

    Play the audio with the text following along, correct names and numbers, and rename the speakers. Download the transcript as Word, Excel, plain text, CSV or JSON, or as SRT and VTT subtitles. You get a notification when processing is done.

Try it on your next recording
Example output

Customer interview · onboarding feedback

  • M4A
  • 42 min
  • 2 speakers
  • Fictional example

Transcript

  • Interviewer: Walk me through the first week after you signed the contract.at 03:12
  • Customer: The set-up was fine. Getting the other departments to use it took longer.at 03:20

Summary

  • Set-up was quick; adoption outside the pilot team was the bottleneck.at 03:20
  • Wants a shared folder per department and single sign-on.at 27:45

ToDos

  • Send the SSO set-up guide to IT
  • Book a follow-up with the HR lead

Invented interview, shown to illustrate the format. Each time code plays the recording from that moment.

Ask the recording instead of rereading it.

Ask what was said about a topic, or what three interviews have in common, and get an answer that points to the passages it came from. Useful when the recording is an hour long and you need one quote from it.

Every line leads back to the audio.

Click a sentence and the recording plays from that moment. The recording is split into topics with timestamps, so checking a name, a figure or a quote takes seconds instead of a scrub through the file.

Send the text where your team works.

Turn follow-ups into ToDos, share the transcript in a team folder, or let Klang save results to Google Drive, OneDrive or Dropbox automatically with an integration on Pro.

All integrations

How to transcribe audio to text

To transcribe audio is to turn everything said in a recording into written text you can read, quote, search or file. There are four realistic ways to do it. The right one depends on how much audio you have, how many people speak, how exact the text must be, and who is allowed to hear the recording.

Four ways to turn a recording into text

Typing it out yourself costs nothing but time, usually four to six hours per hour of clear audio and more with several speakers. It makes sense for a short clip or a recording nobody else may hear.

Built-in tools are worth trying first if you already pay for them. Microsoft Word's Transcribe accepts WAV, MP4, M4A and MP3 uploads, separates speakers, and allows 300 minutes of uploaded audio a month on a Microsoft 365 subscription (30,000 with a Copilot licence), according to Microsoft's support page. Google Docs voice typing listens to a microphone only, so it cannot transcribe a file.

A human transcription service is the choice when a verbatim record must be right the first time, for example as evidence. Rev lists human transcription at $1.99 per minute on its pricing page (read 8 November 2026), which is about $120 for an hour of audio.

An AI transcription tool is the practical option for most recurring work: interviews, meetings, lectures, calls. It works on any file, separates speakers, keeps timestamps, and the time you spend goes into checking rather than typing.

The settings that decide how good the transcript is

Most bad transcripts are caused by audio or settings, not by the transcription engine. In Klang, four settings matter:

  • Language: Automatic detects the language for each part of the recording, which is what you want when people switch between, say, Swedish and English. For a short clip, or a strong accent, choosing the language is more accurate.
  • Number of speakers: Automatic works for most recordings. Set a fixed number from 1 to 10 when voices sound alike or many people talk.
  • Format: Transcription gives readable paragraphs split at each change of speaker, for interviews and meetings. Subtitles gives short timed segments for video.
  • Word lists and name lists (Pro): teach Klang product names, abbreviations and the spelling of people's names, and save them as a transcribe mode for the next upload.

Before you record: a five-point checklist

If you control the recording, these five things improve any transcript more than any tool choice:

  1. Put the microphone close to the speakers: a phone on the table between two people beats a laptop at the end of the room.
  2. Record in a quiet room, with fans, music and notifications off.
  3. Ask people not to talk over each other; overlapping speech is where every transcriber loses words.
  4. Start with names and roles on the record ("Anna, project lead") so renaming speakers afterwards takes seconds.
  5. Keep the original file. Converting a poor MP3 to WAV makes it bigger, not clearer.

How to check a transcript before you rely on it

An AI transcript is a first draft. How much you check depends on what the text is for. A quick skim is enough for your own notes; anything you will quote, publish or file deserves this pass:

  1. Rename the speakers first, so every later correction lands in the right place.
  2. Check every name, number, date and amount against the audio. These are the errors that matter and the easiest to miss.
  3. Listen again wherever two people spoke at once or the sound drops.
  4. For a quote, play the sentence before and after it, so you keep the context.
  5. Export only once the text is checked, so the file and the transcript in Klang agree.

Which export format for which job

Klang exports the same transcript in several formats, with options to include speaker names and timestamps. Word, Excel, SRT and VTT export are part of Pro.

  • Word (.docx): speaker labels, timestamps and optional comments. For reports, interview write-ups and anything you will edit.
  • Excel (.xlsx): one row per segment. For coding interviews or filtering by speaker in research.
  • SRT and VTT: subtitle files for video editors and web players. Avid users have their own subtitle format.
  • Plain text, HTML, CSV and JSON: for pasting elsewhere, publishing, or processing the transcript in your own tools.
  • The original audio file, so the recording and its text stay together.

Transcribing audio for a team or organisation

When recordings contain customers, patients, employees or citizens, the question is less which tool is most accurate and more where the audio goes. Before a team starts uploading, check these, and ask the same of any tool you compare:

  • Where audio is processed and stored. Klang processes and stores it in Europe and is ISO 27001:2022 certified.
  • Whether recordings train AI models. Klang never uses your content for training, on any plan.
  • A data processing agreement you can sign. On Klang's Business plan it is signed in the account, alongside SSO, an audit log and verified domains.
  • Retention and deployment. Enterprise adds a custom retention period, a private cloud with your own encryption key, or installation in your own environment.
  • Who can see what. Transcripts are shared through folders, so a recording is visible only to the people in that folder.

Supported files and languages

Audio: MP3, WAV, M4A, AAC, OGG, OPUS, AIFF and WMA. Video: MP4, WebM, AVI, MKV and MOV. Each file can be up to 10 GB, and you can upload several at once. Public YouTube videos can be imported by link.

Languages: Swedish, English, Norwegian, Danish, German, French, Spanish, Dutch, Italian, Portuguese, Turkish, Finnish, Greek, Polish, Russian, Ukrainian, Japanese, Korean and Chinese (Mandarin). With the language on Automatic, a recording that moves between them is transcribed in the language actually spoken.

Audio to text, four ways compared

Figures from Microsoft's Transcribe support page and Rev's pricing page, read 8 November 2026:

Audio to text, four ways compared
Type it yourselfWord TranscribeHuman serviceKlang
Your time per hour of audioFour to six hoursThe upload, plus your reviewOrdering and a final readThe upload, plus your review
CostFreeIncluded in Microsoft 365, 300 upload minutes a monthFrom $1.99 per minute at RevFree plan; Pro for full history and Word export
File typesAnyWAV, MP4, M4A, MP3Depends on the service8 audio and 5 video formats, up to 10 GB
SpeakersIf you label themSpeaker 1, Speaker 2Usually labelledLabelled throughout on Pro, first part only on Free; renamable
After the transcriptNothingEdit in WordA documentSummary, ToDos, questions across recordings

Other tools and prices change. Check the provider's own page before you decide.

Frequently asked questions

How do I transcribe an audio file to text?

Upload the file to Klang with Upload new, leave the language on Automatic or choose it, and start the transcription. When it is done you get a notification. Play the audio with the text following along, correct what needs correcting, rename the speakers and export the result.

Can I transcribe audio to text for free?

Yes. Klang's free plan includes transcription, summaries and chat, in the web, mobile and desktop apps. Free keeps the last 30 days of history open. Pro adds full history, speaker labels throughout the transcript, unlimited speaker identification, word lists, translation, integrations and Word, Excel, SRT and VTT export, and starts with a seven-day free trial.

Which audio formats can I upload?

MP3, WAV, M4A, AAC, OGG, OPUS, AIFF and WMA, plus MP4, WebM, AVI, MKV and MOV video, up to 10 GB per file. You do not need to convert an M4A or WAV to MP3 first.

Does it separate the speakers?

Yes. Klang splits the transcript at each change of speaker. On the Free plan the speaker labels are shown for the first part of each transcript; Pro shows them throughout and adds unlimited speaker identification, which recognises the same person across recordings. If voices sound alike, set the number of speakers (1 to 10) before transcribing.

Can it transcribe a recording in two languages?

Yes. With the language on Automatic, Klang detects the language for each part of the recording, so a meeting that switches between Swedish and English comes out in both. Very short phrases in a second language can be missed.

How accurate is AI transcription?

It depends mostly on the recording: one clear voice close to the microphone comes out nearly clean, while overlapping speech and a distant microphone do not, with any tool. Treat the transcript as a draft and check names, numbers and quotes against the audio before you use them.

Is my audio used to train AI?

No. Klang processes and stores your files in Europe, encrypts them, and never uses them to train AI. Only people you share a folder with can see a transcript.

Can my whole team use it?

Yes. Teams share transcripts in folders and invite colleagues to the workspace. The Business plan adds SSO, a data processing agreement signed in the account, workspace statistics and an audit log. Talk to us if you are rolling Klang out across an organisation.

Start with the recording you have.

Upload it, check it against the audio, and have text you can use, today.

  • Processed and stored in the EU
  • ISO 27001:2022 certified
  • Never used to train AI