What does a Sworn Translator do?

What is a sworn translation?

A Sworn Translator (also called a Certified Translator) is authorized by a public institution to carry out the translation of legal documents. Once translated, the documents are recognized as official by the local administration. Legal documents can only be translated by sworn translators with appropriate accreditation. The translation of a legal document provided by a non-certified translator has no value according to the law. Hiero conducts a background check on all translators using the software, to ensure their certification is valid and up to date.

Important information

  • A translator must give his client the original copy of the translation.
  • A digital copy of the translation has no legal value if presented as is to an administration which handles legal procedures requiring translations by sworn translators.
  • Is it prohibited to provide forged documents for translation. Translators always check the validity of the documents before they begin translating.
  • A certified translation can only be used once. Should another procedure happen, another translation must be requested.
  • The translator's seal and signature must appear on the translated document.
  • The page layout of the translation must respect the layout of the original document.
  • The price and turnaround time can change, depending on the type and the length of the document.

Becoming a sworn translator (in France)

Assermentation 1 At the moment, there is not special course or specific degree to become a sworn translator. The procedure is more complicated.
The best way to do it would be to first tofollow a training course to become a professional translator (such as a BACHELOR +5 in Applied Foreign Languages). Once you've earned your degree, do not hesitate to take some time to gain some experience.

Should you want to become a expert translator, you can start proceedings to register on the roster of court experts before the Court of Appeals.

Type of documents

Assermentation 2

Civil Registry

  • Birth certificate
  • Marriage certificate
  • Death certificate...
Assermentation 3


  • Identity Card
  • Passport
  • Driver's license...
Assermentation 4

Notarized acts

  • Prenuptial agreement
  • Bill of sale
  • Bankruptcy filing
Assermentation 5


  • Degrees
  • Academic transcript
  • Certificates...