Writing, editing & translation · 5 tools compared

5 Best AI Translators Compared (Free Options Included)

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Korean first

Papago Free

Sounds most natural when reading in Korean, with generous free limits. App features like camera and voice translation are also free.

Documents sent out in English

DeepL Free plan

Korean-to-English translations sound close to a native speaker. The glossary keeps company terms consistent.

Rare languages & Travel

Google Translate Free

Supports over 100 languages without signup, complete with offline language packs.

When tone and style matter

ChatGPT Free plan

Translates while following exact instructions like 'as a polite business email.'

Contracts & Official documents

Flitto Free plan

Add human proofreading to AI drafts. Best for documents requiring accountability.

Comparison table

5 Best AI Translators Compared (Free Options Included) — comparison table
ItemPapagoDeepLGoogle TranslateFlittoChatGPT
Price
Free
Free plan
Free
Free plan
Free plan
Free limits
Free. Usable without login; document translation requires login and has some limits.
50,000 characters/month, 1 file translation/month (up to 5MB), 1 glossary
Free. Translate text, images, documents, and web pages without logging in.
Free AI translation. Professional translation is paid per request.
Free plan available. Latest model has hourly usage limits, with caps on image generation and file uploads.
Korean
KoreanKorean service. Korean↔English/Japanese/Chinese translations are particularly natural.
KoreanKorean UI available. High Korean translation quality with especially natural English phrasing.
KoreanKorean UI available. Supports the most languages, but Korean translation quality is slightly stiffer than Papago or DeepL.
KoreanKorean service. Korean UI, specialized in Korean↔English, Chinese, and Japanese.
KoreanKorean support for both UI and chat. Voice conversation also supports Korean.
Login
Not needed
Optional
Not needed
Required
Optional
Platforms
Web · iOS · Android · Browser extension
Web · Windows · macOS · iOS · Android · Browser extension
Web · iOS · Android · Browser extension
Web · iOS · Android
Web · iOS · Android · Windows · macOS
File input
IMAGE, DOCX, PPTX, XLSX, PDF
DOCX, PPTX, PDF, XLSX, TXT
IMAGE, DOCX, PPTX, XLSX, PDF, TXT
IMAGE, DOCX, PDF
PDF, IMAGE, DOCX, XLSX, CSV, TXT
Number of languages
Around 10 (Korean-focused)
Around 30 (European-focused)
100+
Around 20 + Professional translation
Unlimited (within model's knowledge)
Tone & Context control
Not supported
Partial (Formal/Informal)
Not supported
Available via professional request
Fully customizable
Human proofreading
None
None
None
Paid per request
None

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Tool by tool

Papago

Papago is a Korean translator focused on Korean. Translating English, Japanese, and Chinese into Korean feels most natural. It requires no signup and has generous limits. App camera, voice, and doc translation are free. Language options are limited, with no tone controls.

DeepL

DeepL shines when translating Korean into English and European languages. It rephrases text naturally, and glossaries keep terms consistent. The free tier limits 1,500 characters per translation. Use Pro for confidential data. Desktop shortcuts work anywhere.

Google Translate

Google Translate supports over 100 languages for free. It is strong with languages like Vietnamese or Thai, plus travel camera, voice, and offline modes. Korean output is a bit rigid with no tone options. Built into Chrome, it translates full webpages easily.

Flitto

Flitto is a Korean service combining AI translation with optional human proofreading per task. Great for contracts and notices needing high accuracy. Dedicated tools are faster for pure AI use, and experts cost extra. You can save phrases for repeated use.

ChatGPT

ChatGPT is not a dedicated translator, but it lets you control tone and context. Ask for 'polite business email' style and it adapts. Dedicated tools are faster for quick pastes, and long texts hit free limits. It also summarizes and explains in one go.

How to choose

Choose a translator based on direction and purpose. Pick Papago to read in Korean, DeepL to write in English, and Google Translate for rare languages or travel. For emails where tone matters, prompt a chatbot with context. For critical contracts, use human review like Flitto. Check free limits (character caps, doc limits, daily quotas) and verify data privacy before pasting confidential info.

Recommendation by situation

Recommendation by situation
Situation Pick Why
🗣️ Korean first Papago Sounds most natural when reading in Korean, with generous free limits. App features like camera and voice translation are also free.
💼 Documents sent out in English DeepL Korean-to-English translations sound close to a native speaker. The glossary keeps company terms consistent.
⚡ Rare languages & Travel Google Translate Supports over 100 languages without signup, complete with offline language packs.
🌱 When tone and style matter ChatGPT Translates while following exact instructions like 'as a polite business email.'
👥 Contracts & Official documents Flitto Add human proofreading to AI drafts. Best for documents requiring accountability.

Not a ranking. Different situations, different answers.

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Prices may change; confirm on each official site before paying. A comparison's verified date is the oldest of the comparison and its tools.

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