Structure preserved
Formulas, merged cells, named ranges and sheet structure stay exactly as they are. We only change the text.
Translate Excel files online
AI translation with your formatting fully preserved.
100% hosted in Switzerland
Fully compliant with GDPR and FADP
ISO 27001-certified
Verified by pros in minutes
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Trusted by 1,500+ leading brands across Europe. Explore case studies.
Why choose our online Excel translator?
Better than DeepL
In 3 out of 4 languages according to blind tests by professional translators. Read research paper.
Sovereign, adaptive AI
Supertext is powered by the latest LLM technology. We don’t just translate words – but context, tone and meaning.
Pro translators on demand
Need extra certainty? Our 3,000 experienced linguists are just one click away. In minutes, not days.
What makes a good Excel file translation
SECURITY
Your Excel files never leave Swiss infrastructure
Financial models, HR data and reporting templates often contain sensitive information. The built-in translation function of Google Sheets and third-party Excel add-ins typically route data through external servers outside of Swiss or European jurisdictions. Supertext processes your .xlsx files exclusively on Swiss servers – without storing data after translation.
Supertext
- Formula protection
- Multi-sheet support
- Swiss hosting
DeepL
- No formula protection
- Partial multi-sheet
- EU hosting only
Four steps from upload to translated XLSX
No copy-paste, no reformatting.
1
Upload & scan
All sheets scanned, formulas automatically locked before any processing begins
2
Extract & map
Translatable text identified with column header context preserved
3
Translate
AI translation runs with locale-specific formatting applied
4
Download
Translated .xlsx with formulas untouched and structure intact
Looking for a different format?
We expertly handle these file formats.
NOW AVAILABLE
Seamlessly translate XLSX files and more.
Right in the tools you work with every day.
Better from the get go, perfect when customised
- 90%more ready to publish translations
- 64%fewer edits needed
- 3xfaster time to market
Want to see it on your own content? Try Supertext Enterprise.
Frequently asked questions
Of course – you can save a separate glossary for any desired language combination. Then all you need to do is activate the relevant glossary when translating, and it will be taken into account in the output.
Yes. Simply enter the desired person in the Profile tab of the cockpit under “Access authorisations”.
Yes, we are also happy to offer on-premise hosting for enterprise customers. Interested? Get in touch with us.
All subscriptions except Enterprise and API can be tested for 30 days free of charge. Simply create an account, start the test month and you can benefit from all additional features.
Of course: the Supertext API runs via a separate monthly subscription. This can also be combined with our online translator subscriptions, if desired.
Yes, the number of connections is not limited.
Want to know more? Let's talk.
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