A certified translation is any translation paired with a signed statement attesting to its accuracy. A sworn translation is produced by a translator who has been officially authorized by a court or government to certify translations under their own name. The certified model is standard in the US and UK; the sworn model is the norm across much of Europe, Latin America, and the Middle East.

Same document, different label depending on where it’s going. Pick the wrong one and it gets refused. Here’s how to tell them apart.

Key Takeaways

• Certified = translation + signed certificate of accuracy (US, UK).
• Sworn = signed by a government-authorized translator (much of Europe, Latin America).
• The US has no sworn translators; it uses certified translations.
• Which you need depends entirely on the receiving country and institution.
• When in doubt, check the authority’s wording before ordering.

Certified translation, explained

A certified translation doesn’t require any special government license. It means the translation comes with a certificate of accuracy: a signed statement that the translation is complete and accurate and that the translator is competent. This is what US and UK authorities ask for, including USCIS and UK Visas and Immigration.

Sworn translation, explained

In sworn-translation countries, the government appoints and authorizes specific translators, sometimes called “sworn,” “official,” or “public” translators. Their signature and seal carry legal weight on their own. A sworn translation in Spain, France, or Brazil is signed by one of these authorized professionals and is accepted directly by courts and authorities there.

The US and UK don’t have this system, which is why an American applicant rarely encounters the term until they deal with a foreign authority.

A close cousin: notarized translation

There’s a third term worth knowing. A notarized translation is a certified translation whose signer’s signature is witnessed by a notary. It’s not the same as a sworn translation, though authorities sometimes use the words loosely. If you’re weighing authentication options, our guide to apostille vs. notarization breaks down the related steps.

Which one do you need?

Document is going to…	You typically need
USCIS or a US court	Certified translation
UK Visas and Immigration	Certified translation
A Spanish, French, or German authority	Sworn translation
A foreign consulate (varies)	Often notarized or sworn

When a client applied to a university in Madrid with a US transcript, the certified translation used for a domestic application wasn’t accepted; Spain wanted a traducción jurada, a sworn translation. Sending the right format from the start would have saved a re-order and a week of delay.

Not sure which applies to you? Send us the authority’s requirement → and we’ll confirm the right format before any work begins.

The bottom line

Certified and sworn translations solve the same problem, official acceptance of a translated document, through different systems. The US and UK use certified; many other countries use sworn. Always match the format to the country receiving the document, and when the wording is unclear, ask before you order.

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This article is general information, not legal advice.