Translate any document using 22 AI models
Translate any document using 22 AI models
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Used by teams around the world
How can I translate my documents?
Upload your file
PDF, Word, Excel, PowerPoint, image, or subtitle file, up to 70MB. No account required. Free to start.
Select your languages
Choose source and target language. 330+ languages supported.
Download the translation
SMART runs 22 AI models on the full document and returns the translated file in its original layout.
Can I translate a whole document for free?
Yes. Upload a document and translate it at no cost. No account required. Paid plans start from $6/month.
Does translating a document change its formatting?
No. MachineTranslation.com preserves your original layout: columns, tables, fonts, and page structure stay in place. PDF and Word files come back formatted exactly as uploaded, ready to use without manual cleanup. The median file uploaded to MachineTranslation.com is nearly 6,000 words: a contract, a research paper, a technical manual.
Will my document look the same after translation?
Yes. The translated file downloads with the original formatting preserved: fonts, tables, columns, and images stay in place. MachineTranslation.com processes the file structure directly, not just the raw text.
Is there a file size or page limit for document translation?
MachineTranslation.com supports files up to 70MB in a single upload, covering full-length research papers, legal bundles, and technical manuals. The entire file is translated, not just a preview.
What types of files can I upload to translate?
You can upload PDF, Word (.docx), Excel (.xlsx), PowerPoint (.pptx), TXT, CSV, SRT, HTML, XML, JSON, RTF, ODT, and image files (JPG, PNG, GIF, BMP).
How this was measured: MachineTranslation.com analysed document translations uploaded by paying users between April and June 2026. Word counts are exact, measured from the full uploaded file, not a preview or extract.
Is it safe to upload documents for translation?
Yes. MachineTranslation.com processes documents without storing or using them for AI training. All files are handled in-session only. This is recommended for legal filings, medical records, financial documents, and any confidential content.
How do I translate a PDF without losing formatting?
Upload your PDF and MachineTranslation.com returns a translated file with the original layout preserved. Tables, columns, headers, and text structure stay in place, no copy-pasting into a plain text box required.
- Text-based and scanned PDFs are both supported
- Original columns, headers, tables, and layout preserved
- Output returns as a PDF (scanned PDFs return as an editable DOCX)
Can I translate a scanned PDF?
Yes. MachineTranslation.com reads the text in scanned PDFs using OCR before translating. Upload the scanned file and the platform extracts the text, runs it through 22 AI models, and returns the translated output as a DOCX file.
Which file formats can I translate: Word, Excel, PowerPoint and more?
MachineTranslation.com translates Word (.docx), Excel (.xlsx), PowerPoint (.pptx), plain text, subtitles (SRT), HTML, and image files, in addition to PDF. Upload the file as it is and download the translation in the same format.
Can I translate an Excel file and keep the data structure?
Yes. Upload an .xlsx file and MachineTranslation.com translates the content while preserving the data structure: column headers, cell values, and labels are all handled without breaking the file layout. Download the translated spreadsheet ready to open in Excel.
What is the best way to translate a document accurately?
The best way to translate your document is by running it through multiple AI models simultaneously and selecting the translation the majority agrees on. That cross-model consensus removes the single-point failures that make any one model (including ChatGPT, Google Translate, or DeepL) unreliable on its own across a long document.
| Single AI model | SMART (22 models) | |
|---|---|---|
| Cross-verification | None | 22 models compared |
| Translation error risk | Baseline | Up to 90% lower |
| Consistency across long documents | Degrades by section | Checked sentence by sentence |
| See which model produced what | No | Yes, in the Sources tab |
What makes this document translator more accurate than ChatGPT or Google Translate?
ChatGPT and Google Translate use a single AI model. SMART runs your document through 22 models simultaneously and selects the highest-quality output sentence by sentence by returning the translation the majority agrees on, thus eliminating the single-point failures that cause errors in long documents. The result cuts translation error risk by 90%.
Can I see which AI model produced each translation?
Yes. The Sources tab shows the output from each of the 22 AI models side by side. 74.6% of paying users open the Sources tab after every translation, checking which models agreed and which produced outlier results.
How translation quality is measured: every translation on MachineTranslation.com generates an internal consensus quality score (0 to 9.5 scale) based on agreement across all 22 AI models. The 90% figure reflects the reduction in critical translation errors when consensus output is compared against single-model output across the same document set. The 74.6% Sources tab engagement is measured from paying user sessions, April to June 2026.
Can I translate legal, medical, or business documents with AI?
For most business documents, yes. For legal filings, medical records, or USCIS submissions where a mistranslation creates liability, MachineTranslation.com's Human Verification makes a qualified professional linguist review the output before the document reaches you.
Diplomas, academic transcripts, dissertations are the most common uploaded document type.
72% PDF, thesis scaleBirth certificates, marriage certificates, USCIS documents, apostilles, notarized documents, diplomas, and patents.
Under 3,000 wordsFlight handbooks, engineering specs, safety procedures, coating datasheets, patents, product specifications, and engineering standards.
68% PDFBank statements, financial documents, company contracts. Short-form, split evenly between PDF and Word.
Median ~2,200 wordsMedical records, lab reports, discharge summaries, pharmaceutical protocols.
72% PDFFull novels, scripts, subtitles, and poetry collections. The longest documents in the pipeline, entire books go through at once.
Author and rights-holder tiltedTheology, devotional works, and scripture. Word-majority uploads at near-book scale: working translations being edited, not read-only files.
Word-majorityBased on documents translated through MachineTranslation.com, April to June 2026.
How many languages does the document translator support?
MachineTranslation.com supports 330+ languages including Spanish, French, German, Chinese, Japanese, Arabic, Hindi, Russian, Portuguese, and all major language pairs. Upload a document in any language and select any target language from the list.
Translate documents from English to Spanish
Spanish is the most common document translation pair on MachineTranslation.com. Contracts, research papers, business documents, and immigration paperwork all translate with layout intact.
Translate documents from English to French
English to French is a top pair for business contracts, marketing materials, and official documents. Upload any supported file and download the translated version in the same format.
Translate documents from English to Chinese
English to Chinese document translation (Simplified or Traditional) with original layout preserved. A top pair for business, academic, and technical content.
Translate documents from English to Arabic
Arabic document translation preserves right-to-left formatting in the output. Upload a PDF, Word file, or any supported format and download the Arabic version ready to use.
Translate documents from English to Hindi
Upload any document and translate it to Hindi with layout preserved. English to Hindi is one of the highest-impression language pairs in MachineTranslation.com's search data, and one of the most underleveraged.
Translate documents from English to German
German is a top pair for technical manuals, engineering specifications, and legal documents. Upload the file and download the German translation in its original format.
This is how document translation works today
A small business owner has a contract to send to a partner in Germany. A marketing manager needs a product brochure in Spanish before the campaign launches. A consultant needs a research report translated for a client in Japan.
They open an AI translator. They get an output. It looks right. They send it, and hope.
34% of people using AI translation aren't confident enough in the output to publish it without checking. Among non-linguists, 46% spend more time manually comparing outputs across different platforms than the AI actually saves them. They run the same document through three platforms. They pick the one that looks the most convincing. That's the state of document translation in 2026 for most businesses: fast, cheap, and built on uncertainty.
Enterprise companies solved this years ago with complex localization workflows, dedicated agencies, and six-figure contracts. Everyone else is still opening five tabs.
MachineTranslation.com was built for the businesses that can't afford that, and shouldn't have to. Upload a document and 22 AI models translate it simultaneously. The version they agree on is the one that comes back. Human verification is available in the same platform for when the stakes require a professional review.
This is what modern document translation looks like.
User confidence data: MachineTranslation.com internal research.
What do paid plans add?
Paid plans unlock three additional capabilities. Human Verification includes free reviews up to 2,000 words per month, a qualified professional who guarantees maximum accuracy on the output.
100% accuracy with Human Verification
For legal filings, medical records, certified translations, or any document where a professional sign-off is required, Human Verification is available directly in the platform. A qualified translator reviews the AI output from SMART.
Translate with the best AI models
Paying subscribers get access to the best AI models as they release, including the newest versions of ChatGPT, Claude, Gemini, and the other models in the SMART pool. Free users translate with 22 models. Paying users always get the most current ones.
Connect document translation to any workflow
The MachineTranslation.com MCP connector lets paying subscribers integrate document translation directly into their own systems and workflows: no manual uploading, no switching platforms. Build translation into the systems where the documents already live.