Transcribe Korean Audio to English Text

Korean is a language where the transcript has to be smarter than the speech. Particles decide what a sentence is about — 은/는 versus 이/가 changes the topic, 을/를 marks the object — and spacing rules split and merge words: 안 되다 and 안되다 are different statements separated by one space. Politeness compounds it: 반말 and 존댓말 tell you who is speaking to whom, and a transcript that flattens all of that reads like Korean but says nothing.

Audio Notes transcribes Korean with Whisper running server-side (openai/whisper-large-v3-turbo, with large-v3 as a fallback), and Korean is one of Whisper's better languages: roughly 5-8% character error rate, beating specialist CJK models like SenseVoice, and — the part that matters — Hangul rendered with correct particles and spacing. iOS dictation produces Hangul text too, and Voice Memos transcription lists Korean among its ten languages, but both dead-end: no translation, no imports, no reuse. The text just sits there.

The workflow that works: record an interview or import a file, get the Korean transcript, and let the app auto-translate it into English. The transcript stays in Hangul underneath, with an English summary alongside — and if you want the transcript alone, it's already there before translation happens.

한국어 sits in the picker's popular row next to English, 中文, 廣東話, 日本語 and Español. This page covers the Korean specifics within the wider system that can transcribe audio in any language.

Getting Korean Audio into Text: Three Routes

1. Record it live

Open the app, choose 한국어 from the picker, and hit record. Korean interviews, university lectures, and business calls transcribe as they're recorded, with text appearing while you talk. A single recording can run up to 90 minutes. Free accounts carry 60 minutes of transcription in total — lifetime, not monthly — and Pro is $5.99 a month for 10,000 minutes.

2. Import what you already have

Audio in m4a, mp3, wav, caf, aac, aiff or mp4a imports directly; video in mp4, mov, m4v, avi or mkv works too, with the audio track extracted automatically. That's the route for recorded Zoom lectures, variety-show clips you want to study, or an old interview file sitting in Files. Processing happens on Audio Notes' servers, so transcription needs an internet connection — nothing is transcribed on the phone itself.

3. Share audio from other apps

Voice notes trapped in KakaoTalk, Telegram, or iMessage? Share them into Audio Notes and they transcribe like anything else. It's the same pipeline people use for transcribing voice messages across a whole library of conversations — if a person can send it, you can turn it into Hangul.

4. After the transcript

Because the app's preferred language is English, each Korean transcript is automatically translated into English and summarized in English. The Hangul text stays as the source of truth — translation is an extra layer, not a replacement — and the summary is where most people start reading. Compare that with Apple's stack, where dictation and Voice Memos both handle Korean text but the result can't be translated, imported, or reused; the iPhone voice-to-text guide maps those system-level limits in full.

Two neighboring guides are worth reading if you work across East Asian languages: Japanese and Mandarin follow the same pattern. And the broader AI voice-to-text comparison shows why Whisper-based tools like this one outrun the free options at scale — for Korean specifically, that's the 5-8% character error rate versus what consumer dictation actually delivers.

Korean Transcription Options Compared

Method	What you get	Limits	Best for
Record in Audio Notes	Live Hangul transcript with correct particles and spacing; English translation and summary	90-minute cap per recording; 60 free lifetime minutes; server-side (internet required)	Korean interviews, lectures, live conversations
Import a file	Transcript of m4a, mp3, wav, caf, aac, aiff, mp4a audio and mp4, mov, m4v, avi, mkv video	iOS only; upload time on long files	Lecture recordings, K-content clips, older interview files
Share sheet	Any app's audio transcribed in place	Source app must expose Share; no speaker labels or diarization	KakaoTalk and Telegram voice notes
iOS Voice Memos built-in	Hangul transcript, Korean supported in dictation	No translation, no imports, no library search	Quick on-device text when English is never needed

Korean Transcription Questions

Does it get particles and spacing right?

Mostly — that's exactly where Whisper outperforms the smaller Korean models. 은/는 and 이/가 are chosen correctly in ordinary speech, and spacing follows standard Hangul rules the large majority of the time. Expect the occasional split or merge on very fast speech, and proofread anything you're publishing. If you're turning transcripts into finished documents, a quick pass over the particles is the highest-value proofread you can do.

Can I transcribe Korean to English?

Yes. Set English as the preferred language and Korean audio produces a Hangul transcript first, then an automatic English translation and English summary. The Korean text is preserved underneath, so you're never choosing between one or the other.

Do formal and informal speech both work?

Both. 존댓말 and 반말 are transcribed as spoken — the app doesn't normalize politeness levels, and it doesn't need to. Formal interviews and casual KakaoTalk-style speech both come through cleanly, though heavy slang and mumbling are where accuracy dips.

Can I transcribe interviews or phone calls?

Yes, with one honest caveat: there are no speaker labels. You get a single continuous transcript, so for interviews you'll want to note who said what, or record each speaker's sections separately.

Can I use it for K-drama or K-pop content?

It works well for dialogue with clean audio — a K-drama scene with music in the background transcribes well. Music-heavy K-pop clips are the weak case: Whisper struggles when the vocal track has to compete with instruments, so for subtitles, clean dialogue is the key.

Audio Notes AI turns recordings in any language into text you can search, copy, translate, and summarize — on iPhone. Every account includes 60 minutes of lifetime transcription for free; Pro ($5.99/month) unlocks 10,000 minutes per month with a 90-minute cap per recording. Whisper-powered transcription runs server-side in 60+ languages, transcripts are translated and summarized automatically when the detected language differs from your preferred language, and shared notes are encrypted with AES-256 on your iPhone before upload — the decryption key lives only in the link.

More Language Guides

Download Audio Notes AI free on the App Store — 60 minutes of lifetime transcription included.