Get Stunningly Accurate Korean to Japanese Translations, Absolutely Free.
Experience best-in-class AI accuracy—instantly translate your Korean files into natural Japanese with a tool trained on legal, business, and local documents from Seoul to Tokyo. Your first 1,000 words are on us.
Start Your Free Accurate Translation“The Korean to Japanese translation quality is unmatched. It properly translates legal phrases from the Korean Civil Act and adapts to Japanese legal and business context—something generic AIs, which misread terms like ‘주주총회’ (shareholder’s meeting) or politeness levels, often get very wrong.”Dr. Yuko Tanaka, JAT, Japan Association of Translators
Why Free Generic Tools Fail in Korean to Japanese Accuracy
Generic translators make literal mistakes. Our free, accurate AI understands honorifics, legal nuance, and localization for both Korea and Japan. Compare actual outputs:
| Korean Phrase | Generic Free AI Translation | Our Accurate Translation |
|---|---|---|
Business Politeness 확인 부탁드립니다. | 確認をお願いします。 | ご確認のほど、よろしくお願いいたします。 |
Legal Term 주식회사 | 株式会社（音訳） | 株式会社 |
Common Cultural Expression 수고하셨습니다. | お疲れさまでした。 | お疲れ様でした。（日本語の挨拶に自然に） |
Industry-Specific Term 전자결제시스템 | 電子決済システム | 決済ゲートウェイ（日本基準の訳に最適化） |
Guarantee Perfect Accuracy with a Free Custom Dictionary
True accuracy means using YOUR terms. Our Custom Dictionary lets you lock your preferred Japanese equivalents for key Korean words and phrases. Maintain total consistency throughout legal, technical, and business documents—a free feature.
Brand Integrity
Always translate your company or service name as you intend. Example: Translate '네이버' as 'NAVER' (brand), not as ‘ネイバー’ (phonetic) or ‘検索サイト’ (search site).
Technical Precision
Fix Japanese translations for technical words. Example: '모듈' as 'モジュール' (module), not '単位' (which is wrong in context).
Legal Consistency
Enforce accurate translation for legal clauses. For example: '근로계약서' should be consistently translated as '雇用契約書' for Japanese HR/legal context.
Consistent Taglines
Keep your Japanese PR message the same every time. Example: Always translate '함께 성장하는 기업' as '共に成長する企業' and not simply as '一緒に成長する会社'.
Accurate Translations for Every Profession
Prevent costly errors in your Korean to Japanese documents. Our AI is specially tuned for business, legal, IT, and technical content relevant to the Shin-Ōsaka or Gangnam office, and more.
Legal & Corporate
Scenario:
Translating employment contracts or business agreements from Seoul for a Tokyo subsidiary or client.
Challenge:
Misinterpreting ‘근로계약서’ (labor contract) or ‘이사회 결의’ (board resolution) can cause non-compliance with the Japanese Companies Act. Legal terms must map precisely to Japanese equivalents.
Solution:
Our AI is trained on Korean and Japanese legal corpora and official precedents, ensuring compliance with both the Korean Commercial Act and Japanese 法務省 (Ministry of Justice) terminology.
Finance & Investment
Scenario:
Translating an annual report from a KOSPI-listed firm for Japanese investors in Marunouchi.
Challenge:
Generic tools may misread Korean vs. Japanese financial formats and mislabel figures, risking regulatory or monetary errors per Financial Instruments and Exchange Act (金融商品取引法).
Solution:
Our AI is fine-tuned on FSA-compliant (金融庁) and Financial Supervisory Service (FSS, Korea) materials. Accurate financial terms like '매출액' as '売上高,' correctly localizing number formatting.
Technical & IT
Scenario:
Localizing Korean software manuals for use by Japanese clients (e.g. in Sapporo or Fukuoka).
Challenge:
'업데이트' or '설정' can be awkwardly or incorrectly translated; UI strings and help texts require strict technical consistency in Japanese IT Japanese, as per JIS X 0213.
Solution:
Take advantage of Custom Dictionary for strings like '업데이트' always as 'アップデート', '설정' as '設定'. Trained on Japanese technical corpora from Japan Electronics and Information Technology Industries Association (JEITA), ensuring natural, accurate output.
Your Free, Accurate Translation in 3 Simple Steps
Upload Your Korean File
Upload your Korean document/ spreadsheet/ presentation/ etc. It’s secure and easy.
Apply Custom Dictionary
Optionally, fix or pre-set your Japanese translations for terms or names.
Download Your Accurate Japanese Translation
Get your translated document ready to use—in seconds.
Broad Document Support
Your Security and Privacy are Our Foundation
Our free service offers enterprise-grade security. Translating sensitive files between Korea and Japan (e.g. privacy agreements, business secrets) leaves zero room for compromise.
End-to-End Encryption (E2EE)
Documents are secured with AES-256 encryption from upload to download.
Strict Zero Data Retention Policy
We never retain, reuse, or use your files for AI training. Everything is deleted immediately after translation—even for free users.
Global & Local Compliance
SOC 2 Type II certified infrastructure. Full compliance with GDPR, Japan’s Act on the Protection of Personal Information (APPI), and South Korea’s Personal Information Protection Act (PIPA).