How to Translate a Document or Email with Copilot
Translation is no longer a job for specialists in everyday cases. Copilot can translate fast, with the right tone, and let you check the result.
What it is
Translation used to mean either expensive professional services or risky free tools that produced robotic output. Copilot has changed this for everyday business translation. Need to translate an internal email, a customer message, a piece of marketing copy? Copilot does it in seconds, with appropriate tone, and lets you adjust for region or context.
The skill is specifying tone and context. ‘Translate this to French’ produces a literal translation. ‘Translate this to French (for France) in a friendly customer-facing tone, and keep our product names unchanged’ produces something you can actually send. Tone and locale matter — French for France isn’t the same as French for Quebec.
Where this falls short is for legally binding or culturally sensitive content. Contracts, regulatory communications, anything where exact wording matters legally — those still need professional translators. Copilot is excellent for the routine 95%; for the high-stakes 5%, treat it as a starting draft for a human translator to refine.
When to use this
- When you need to send an email, message, or document in another language.
- When you’ve received a non-English document and need to understand it quickly.
- When you’re communicating with international colleagues or customers.
- When you want a draft translation to send to a professional translator.
How to do it
- Paste the source text and specify the target language.
- Tell Copilot the tone (formal, friendly, customer-facing, internal).
- Specify the region if relevant (Spanish for Spain vs Mexico, etc.).
- Ask Copilot to keep specific terms unchanged (product names, brand names, technical terms).
- Review the translation for tone and accuracy.
- If the content is high-stakes, send to a professional translator for verification.
- Save useful translations or build a glossary for repeat use.
Best practices
- Specify region for languages with multiple variants. Spanish, French, Portuguese, Chinese — region matters.
- Ask Copilot to keep brand names and acronyms unchanged. ‘Microsoft 365’ shouldn’t become ‘Microsoft 365 in Italian’.
- Use the ‘natural’ version for readability. Literal translations sound like translations; natural ones sound right.
- Don’t translate confidential content unless your environment allows it. Check your tenant’s policies.
Common mistakes
- Translating high-stakes legal content with Copilot only. Professional translators exist for a reason.
- Forgetting tone and context. Same words in different tones land very differently.
- Trusting translations without a native speaker review for important communications. Subtle errors are easy to miss.
The Copilot Readiness Guide gives you the 25-question scorecard, the 4-category risk audit, and the 30-day plan to fix permissions, content quality, and sensitive content before go-live.
Get the Copilot Readiness Guide — $39 →FAQ
Can Microsoft Copilot translate documents?
Yes — Copilot in Word translates entire documents into 100+ languages while preserving formatting. Right-click → Translate, or use Copilot Chat with ‘Translate this document into [language]’. For Outlook, Copilot offers inline translation of incoming and outgoing emails.
How accurate are Copilot translations?
High for major languages (English, Spanish, French, German, Mandarin, etc.) on standard business content; lower for less-common languages, idiomatic phrases, technical terminology, and legal/medical content. For high-stakes translations, treat Copilot as a draft and have a fluent reviewer verify.
Can Copilot translate Teams chat in real time?
Yes — Teams has inline real-time translation in chats and during meetings (live captions). The quality is sufficient for general conversation; for negotiations or technical discussions, verify with a human translator. The 2026 voice features extend this to voice-to-voice translation in supported languages.
How do I preserve formatting when translating with Copilot?
In Word, the built-in Translate function preserves formatting automatically. Copilot Chat translations lose formatting (bullets, tables, bold) — for formatted output, ask Copilot to ‘translate this preserving the original structure’ and verify. For mission-critical formatted documents, use Word’s Translate.