How do I translate an English PDF into Thai?

Upload the PDF and select Thai as the target language for a translated PDF with its layout retained. To reverse the direction, select English as the target on this same page.

Is Thai document translation free?

You can try it free, with no account needed, and signing in gives you a larger daily allowance. Pro and Scholar are there for longer documents and regular use.

What file will I download?

Native DOCX, PPTX, XLSX and EPUB uploads use their corresponding file formats for the translated result. PDF output follows the page layout, with translated pages rendered as images; selectable PDF text is not guaranteed. Native Office text can remain editable, while translated text inside embedded pictures remains image content. Font choice, line breaks and page count can change.

Can I translate a scanned Thai document?

Yes. You can upload a scanned PDF or a JPG, PNG or HEIC photograph without running a separate OCR tool. Use sharp, upright pages with complete margins. Small print, faded stamps, handwriting and text hidden by marks need careful checking against the source.

Can I translate a Thai document into English?

Yes. Upload the Thai file and select English as the target language. The same page works in both directions, and the source language is detected automatically.

Is the result a certified translation?

No. The result is an AI-generated translation without a human translator’s certification. It can help you read a document or prepare a draft. If you need to submit it officially, check the recipient’s requirements and arrange any required professional review or certification.

Thai PDF & Document Translator — English ↔ Thai

Translate English to Thai or Thai to English while preserving your document’s layout. Upload your file, choose the target language, and get a natural translation that keeps the meaning of the original.

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See “Keep formatting” in action

Real examples of the “Keep formatting” option: original on the left, translated document on the right. Click either page to enlarge.

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A civil complaint filed in Mexico City, Spanish to English. Caption block, numbered pleadings, the evidence table and the signature block all keep their places. — Original — A civil complaint filed in Mexico City, Spanish to English. Caption block, numbered pleadings, the evidence table and the signature block all keep their places.

An Italian birth certificate, photographed rather than scanned. The framed masthead, the field grid, the marginal annotations and the round seal all hold their positions. — Original — An Italian birth certificate, photographed rather than scanned. The framed masthead, the field grid, the marginal annotations and the round seal all hold their positions.

A handwritten archaeological field notebook from 1974. The engine reads the hand and keeps the ruled inventory table intact. — Original — A handwritten archaeological field notebook from 1974. The engine reads the hand and keeps the ruled inventory table intact.

A handwritten archaeological field notebook from 1974. The engine reads the hand and keeps the ruled inventory table intact. — Translation — A handwritten archaeological field notebook from 1974. The engine reads the hand and keeps the ruled inventory table intact.

A German hospital discharge summary. Diagnoses with ICD codes, lab values and the medication table survive the translation unchanged. — Original — A German hospital discharge summary. Diagnoses with ICD codes, lab values and the medication table survive the translation unchanged.

A German hospital discharge summary. Diagnoses with ICD codes, lab values and the medication table survive the translation unchanged. — Translation — A German hospital discharge summary. Diagnoses with ICD codes, lab values and the medication table survive the translation unchanged.

A 1747 parish baptism register in Latin. Ruled columns, godparents and marginal notes stay aligned, so the genealogy still reads as a register. — Original — A 1747 parish baptism register in Latin. Ruled columns, godparents and marginal notes stay aligned, so the genealogy still reads as a register.

A 1747 parish baptism register in Latin. Ruled columns, godparents and marginal notes stay aligned, so the genealogy still reads as a register. — Translation — A 1747 parish baptism register in Latin. Ruled columns, godparents and marginal notes stay aligned, so the genealogy still reads as a register.

A scanned 17th-century Italian index of sermons. Two columns of dense small print, translated in place. — Original — A scanned 17th-century Italian index of sermons. Two columns of dense small print, translated in place.

A scanned 17th-century Italian index of sermons. Two columns of dense small print, translated in place. — Translation — A scanned 17th-century Italian index of sermons. Two columns of dense small print, translated in place.

How Thai documents come out

Translate an English PDF into Thai, or a Thai document into English. Upload the original file and choose the target language. Download a translated file that retains the placement of headings, tables and notes.

Thai is written without spaces between words, with vowel and tone marks stacked above and below consonants. Line breaks therefore depend on word boundaries, and output needs a font that supports Thai with enough line height. Thai documents often use Buddhist Era (B.E.) years, which run 543 years ahead of the Gregorian calendar, and sometimes Thai digits (๐–๙).

English to Thai, or Thai to English

English → Thai

For an English notice, worksheet or agreement, select Thai as the target for a translated file. Review the Thai script output and line wrapping, especially in narrow tables and headings.

Thai → English

For a Thai PDF or scanned record, select English as the target. Compare names, numbers and labels with the original page; the same person or place may have more than one English spelling.

Translate your document and keep its structure

The translator keeps your file’s structure while translating the text in context. The downloaded format depends on the source file.

PDFs and scanned pages: The translated PDF follows the page visually, with translated pages rendered as images. Selectable PDF text and identical fonts are not guaranteed.
Word documents and PowerPoint presentations: Start with DOCX or PPTX when you have it. Native paragraphs, table text and slide text can stay editable in the corresponding file format. Translated text inside pictures remains image content; review text wrapping and font changes in your editor.
Excel workbooks and EPUB books: Use the original XLSX or unprotected EPUB for a translated workbook or ebook. Review formulas, numbers and text cells in a workbook; check chapter order, navigation and text flow in your ebook reader.

What people translate to and from Thai

Notices and study material into Thai

Translate an English workplace notice, school letter or product manual for Thai readers. Keep the heading, schedule and supporting notes together, then check the translated page for text that has become too small.

Registrations and certificates into English

Read a house registration (tabien baan), birth certificate, transcript or contract alongside the Thai original. Review every name, date and number before relying on the translation.

Workplace documents in both directions

Translate English safety instructions and HR material into Thai, or Thai correspondence into English. Upload the original Word document when you need to revise the translated text afterward.

Scanned print and family papers

Upload a printed Thai letter or archival page without copying out the text. Use a clear, complete scan and check faded passages separately; a fluent English sentence is not proof that unclear handwriting was read correctly.

What to watch for in Thai document translation

PDFs exported from older Thai software can have broken text layers in which tone marks are misplaced or words are split oddly when copied. Upload the file itself and check the result against its rendered pages.

Check that tone and vowel marks are not clipped and that lines break between words.
Compare Buddhist Era years, Thai digits and amounts with the original; years should not be converted silently.
Check the spelling of personal and place names, which can be romanized more than one way.

Thai document translation FAQ

How do I translate an English PDF into Thai?: Upload the PDF and select Thai as the target language for a translated PDF with its layout retained. To reverse the direction, select English as the target on this same page.
Is Thai document translation free?: You can try it free, with no account needed, and signing in gives you a larger daily allowance. Pro and Scholar are there for longer documents and regular use.
What file will I download?: Native DOCX, PPTX, XLSX and EPUB uploads use their corresponding file formats for the translated result. PDF output follows the page layout, with translated pages rendered as images; selectable PDF text is not guaranteed. Native Office text can remain editable, while translated text inside embedded pictures remains image content. Font choice, line breaks and page count can change.
Can I translate a scanned Thai document?: Yes. You can upload a scanned PDF or a JPG, PNG or HEIC photograph without running a separate OCR tool. Use sharp, upright pages with complete margins. Small print, faded stamps, handwriting and text hidden by marks need careful checking against the source.
Can I translate a Thai document into English?: Yes. Upload the Thai file and select English as the target language. The same page works in both directions, and the source language is detected automatically.
Is the result a certified translation?: No. The result is an AI-generated translation without a human translator’s certification. It can help you read a document or prepare a draft. If you need to submit it officially, check the recipient’s requirements and arrange any required professional review or certification.

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