Korean Document Translator — English ↔ Korean
Upload a PDF, Word, PowerPoint, Excel, or EPUB file — or a photo of a paper document — and get it translated between English and Korean in minutes. Polytranslator reads the file, runs OCR on scanned pages, and returns clean translated text you can download as a PDF. It works in both directions: English to Korean for documents headed to Korea, and Korean to English for certificates, contracts, and records coming the other way.
How Korean documents come out
Korean is written in Hangul, an alphabet whose letters stack into square syllable blocks, and modern documents run left to right in horizontal lines — vertical, right-to-left layout survives only on book spines and in some pre-1990s records. Formal and legal paperwork still mixes in Hanja (Chinese characters), usually in parentheses after a name or legal term to pin down which of several identically spelled Sino-Korean words is meant; older certificates, deeds, and family registers can be mostly Hanja. Layout conventions differ from English in ways that matter for documents: dates are written year-first (2026년 7월 20일), family names come before given names, official documents carry a personal seal (도장) where English documents carry a signature, and large numbers group by ten thousand (만) rather than by thousand — 1억 is 100,000,000, a standing source of errors in financial tables. Korean text also wraps between any two syllable blocks, even mid-word, so translated text reflows differently from the source; English-to-Korean translation usually shortens the character count, though full-width Hangul glyphs keep the visual length closer than the count suggests. Our output is deliberately not a pixel-for-pixel copy of your original: you get the full translated text as clean, readable HTML with a PDF download, which avoids the overlapping text boxes and broken syllable spacing that plague layout-mimicking converters.
What people translate to and from Korean
Immigration and civil documents
Korean civil records — the family relation certificate (가족관계증명서), basic certificate (기본증명서), marriage relation certificate (혼인관계증명서), and resident registration copy (주민등록등본) — are the documents Korean-Americans most often need in English for green card, K-visa, and citizenship filings. These are dense, table-heavy forms with fixed legal phrasing and names that must be romanized consistently. Upload the PDF or a phone photo of the certificate and get a faithful English rendering of every field, so you know exactly what the document says before you commission a certified copy for submission.
Academic records and research
Korea sends one of the world's largest cohorts of international students, and every application starts with a transcript (성적증명서) and graduation certificate (졸업증명서) in English. In the other direction, researchers working on Korean topics hit paywalls of untranslated theses, government white papers, and journal PDFs. Both directions work here: upload the registrar's PDF or a scanned academic record, and for long papers the Scholar plan handles files up to 50MB and 1,000,000 characters in one pass.
Business with Korean partners
Contracts, product specifications, PPTX pitch decks, and XLSX price lists move constantly between English and Korean firms. Korean business documents are written in specific registers — correspondence in the formal -습니다 style, internal reports in plain 한다체 — and the Advanced tier is built to hold the right register throughout instead of drifting into casual phrasing mid-document. Translate the incoming Korean proposal to English to understand it fully, and translate your reply's attachments back.
Family papers and adoption records
Hundreds of thousands of Korean adoptees hold case files, intake forms, and letters they cannot read — often typewritten, sometimes handwritten, sometimes in the mixed Hangul-Hanja script of older records. The same goes for second-generation Korean-Americans with boxes of letters from grandparents. Photograph the pages (JPG, PNG, or HEIC) and upload them; OCR plus translation turns them into English text you can actually read, page by page.
What to watch for in Korean document translation
The most common failures in Korean document translation follow directly from the grammar. Korean drops subjects and pronouns whenever context makes them recoverable, so sentence-by-sentence machine translation regularly guesses the wrong subject — a case file's 'was transferred to the orphanage' can silently become 'I transferred' or 'he transferred.' Going into Korean, register is the trap: documents are written in fixed speech levels, and output that drifts between the formal -습니다 style and plain 한다체 reads as careless or rude to a Korean recipient. Korean's verb-final word order means the operative meaning of a long contractual sentence lands at the very end, and translators that chunk mid-sentence garble it. Sino-Korean homophones that print identically in Hangul (연패 is both 'winning streak' and 'losing streak') need context or the parenthetical Hanja to resolve. Numbers get mangled at the 만/억 boundary because Korean groups by ten thousand — 3억 원 is 300 million won, not 3 billion. And romanized names are not deterministic: 박 can be Park or Bak, 이 can be Lee, Yi, or Rhee, so a translated certificate must match the spelling already on the passport. The Advanced tier translates with full-document context specifically to keep subjects, register, and numbers consistent across pages.
Korean document translation FAQ
- Is the English-to-Korean document translator free?
- Yes, with limits. The free tier translates files up to 4MB — enough for most certificates, letters, and short PDFs — using the Fast quality tier. Pro raises the file limit to 20MB and unlocks the Advanced tier, and Scholar handles files up to 50MB and up to 1,000,000 characters for books and theses. No signup is needed to try it.
- Can it translate a scanned or photographed Korean document?
- Yes. Upload a JPG, PNG, or HEIC photo, or a scan-only PDF, and we run OCR before translating. Printed Hangul reads very reliably; clear handwriting and older mixed Hangul-Hanja documents usually work but are worth spot-checking. Shoot the page straight-on in good light — Hangul syllable blocks are compact, and a sharp image is the difference between a clean read and a garbled one.
- What file formats and sizes are supported?
- PDF, DOCX, PPTX, XLSX, and EPUB, plus photographed or scanned documents as JPG, PNG, or HEIC. Free covers files up to 4MB, Pro up to 20MB, and Scholar up to 50MB and 1,000,000 characters per document.
- How accurate is it? What is the difference between Fast and Advanced?
- Fast is a strong general translator and is what the free tier uses. Advanced runs a frontier model and is noticeably better at the things Korean punishes: keeping a consistent formal register (-습니다 vs. plain style), untangling long clause-final legal sentences, inferring the subjects that Korean drops, and resolving Sino-Korean homophones from context. For a contract, a civil certificate, or anything you will act on, use Advanced.
- Will the translated PDF look exactly like my original?
- No, and that is a deliberate choice. We return the complete translated text as clean, readable HTML with a PDF download, rather than trying to paint the translation back into the original's boxes and columns. Layout-mimicking tools routinely produce overlapping text and broken spacing — especially between English and Korean, where line lengths and wrapping rules differ. You get every field and every sentence, in order, in a document you can read, search, and copy from.
- Can I use the translation for USCIS or other official submissions?
- Use it to get an accurate, complete English text of your Korean certificate — most agencies, including USCIS, additionally require a signed statement certifying the translator's competence, which a machine translation alone does not carry. Many people translate here first to verify contents and catch name-spelling issues, then have the certification prepared. One tip: fix the romanization of names to match your passport spelling (이 can be Lee, Yi, or Rhee) before anything is submitted.
- Does it handle Korean to English as well as English to Korean?
- Yes, both directions with the same uploader — it detects the document's language automatically. Korean-to-English is the more common direction for certificates and records; English-to-Korean is typical for business documents, manuals, and letters to family. It also handles documents that mix the two, like bilingual contracts.
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