> Quick answer: Create a separate Google Ads campaign for each target language. Translate all copy and assets. Watch character limits closely. Double-width languages like Japanese and Chinese count each character as two toward the limit. Use transcreation, not literal translation, to preserve meaning within constraints.
Why You Need Separate Campaigns for Each Language
One campaign per language. That's the rule in Google Ads, and it shapes everything downstream.
Language targeting works at the campaign level
Per Google's Ads Help Center, language targeting is set at the campaign level. Google matches your ads to users based on their interface language and recent search activity. You don't configure language at the ad group level. You configure it at the campaign level.
Build a clean structure. One campaign, one language.
Mixing languages in one campaign dilutes relevance
Put Spanish and English ads in the same campaign and ad relevance drops. Quality Score drops with it. Cost-per-click rises. Keep languages separate. Match keywords, ad copy, and landing pages within each campaign. Misaligned signals hurt every metric.
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How to Structure Your Translated Campaigns
Five steps take you from one language to many without losing campaign quality.
Step 1: Create a separate campaign for each language
Duplicate your best-performing campaign. Rename it with the target language. You keep the same structure, bidding logic, and ad group layout without rebuilding from scratch.
Step 2: Set language and location targeting
In campaign settings, set language targeting to the new language. Align location targeting to regions where speakers live. Spanish for Spain and Spanish for Mexico are two different campaigns. Dialects and regional norms differ enough to matter.
Step 3: Translate your ad copy
Translate every user-facing asset. Headlines, descriptions, sitelinks, callouts, and structured snippets all need to match. Translate your landing page too. Matching ad copy paired with a mismatched landing page breaks the experience and hurts conversion rate.
Step 4: Account for character limits and double-width languages
Per Google's Ads Help Center, expanded text ad headlines support up to 30 characters each. Description fields support up to 90 characters each. For double-width languages like Chinese, Japanese, and Korean, each character counts as two toward the limit. A 15-character Japanese headline already fills the entire 30-character cap.
Brief your translator on these limits before they start. Ask for alternative translations if the first draft runs long. Day Translations notes that original copy often requires more words when translated, so character headroom disappears fast.
Step 5: Review and test before launch
Have a native speaker review the final copy. Run a small-budget test first. Compare CTR and conversion rate to your source-language campaign before scaling spend.
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Key Translation Challenges and How to Handle Them
Translation rarely fits cleanly inside Google's character limits. Knowing the friction points helps you plan ahead.
Character limits vary by language
Translated copy is almost always longer than the original. Short English phrases often expand in German, French, or Spanish. Give your translator the exact character limit alongside the source copy. No surprises mid-project.
Double-width languages (Japanese, Chinese, Korean) count as 2 characters
This halves your usable space in practice. Plan for shorter copy in those languages from the start. Work with a transcreator who understands the constraint, not just a translator who works from word count alone.
Transcreation vs. literal translation
Literal translation often breaks inside a character limit. It can also miss the cultural tone entirely. Transcreation adapts your message for the local audience while preserving intent. As Search Engine Journal notes, some technical terms have no direct equivalent in local languages. When literal translation won't fit, ask for an alternative that carries the same meaning.
Regional dialect differences
Mexican Spanish and Spain Spanish are different. Brazilian Portuguese and European Portuguese are different. Tag each campaign with the right regional variant. Give translators your brand guidelines and visual context. The more context they have, the more accurate the output.
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Using AI to Speed Up Multilingual Ad Copy
Manual translation is slow. It's also inconsistent across a large asset library.
Automate translation with consistency
Coinis AI Translate, part of Coinis Revise, adapts your ad creatives for new languages without rebuilding from scratch. Upload your creative, select the target language, and the text updates automatically. Your visual layout stays intact.
Coinis publishes directly to Meta today. Google Ads direct publishing is on the roadmap. In the meantime, export your translated creatives and drop them into your Google Ads campaigns. The time saved on translation is real regardless of where you launch.
Maintain your brand voice across languages
Manual translation breaks brand voice fast. Coinis Brand Profile stores your tone, messaging rules, and key brand language. AI Copywriting draws from that profile when generating translated copy. The output reads like your brand in every language, not a generic translation service.
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Frequently Asked Questions
Do I need a separate Google Ads campaign for each language?
Yes. Language targeting in Google Ads works at the campaign level. Create one campaign per language with matching keywords, ad copy, and landing pages. Mixing languages in a single campaign reduces ad relevance and raises costs.
How do character limits work for double-width languages in Google Ads?
For Chinese, Japanese, and Korean, each character counts as two toward the character limit. Expanded text ad headlines allow 30 characters each, so a Japanese headline is effectively capped at 15 full-width characters. Plan for shorter copy in these languages from the start.
What is transcreation and why does it matter for Google Ads?
Transcreation adapts your ad copy for cultural relevance rather than translating word for word. It matters because literal translations often exceed character limits and miss local tone. A transcreator preserves your message meaning while fitting the copy into Google's strict character constraints.
Can I use AI to translate my Google ad copy?
Yes. Tools like Coinis AI Translate adapt your ad creatives for new languages without rebuilding from scratch. You export the translated assets and upload them into your Google Ads campaigns. Pairing AI translation with a Brand Profile keeps your tone consistent across every language version.