One language on any plan
Open Settings → Languages. Your customer language sits at the top of the list, marked Default. On the free plan that is your one language, and it can be any of our 12: English, Finnish, Swedish, Norwegian, Danish, German, Dutch, French, Spanish, Italian, Portuguese or Polish. Calculators, quote forms and emails all use it.
To swap it, click Change language and pick another. The new one becomes your default and the old one is switched off. Nothing is deleted: its translations stay saved for later.
If your workspace had both English and Finnish switched on before October 2026, you keep both.
Pro feature
Offering more than one language at once needs Pro: customers then pick their own, and every price, product name and email follows.
Adding a language, Pro
Click Add Language at the top of the list. Pick from the full language list. For the ten languages with a ready-made pack (Swedish, German, French, Spanish, Norwegian, Danish, Dutch, Portuguese, Italian and Polish), check Pre-fill with built-in translations to start with professionally translated UI text instead of a blank slate. Any other language works too, you just fill in the interface strings yourself with Edit Translations on that language's row. Once added, it appears in the same list, with the same on/off switch.
If you move from Pro back to Free
Free serves one language. Until you choose which one to keep, customers see only your default language. Settings → Languages asks you to choose; the one you keep becomes the default and the others are switched off, not deleted. Upgrade again and you switch them back on.
Translating your own content
The interface (buttons, labels) is covered by the packs above. Your product names, category names, and descriptions are yours to translate, when you edit a product or category, switch the language tab at the top of the form and fill in that language's version. If a translation is missing, the calculator falls back to the account's default language.
Which language a specific calculator shows
With one language, every calculator simply uses it. With several, each calculator has its own Calculator Language setting on the Basic tab: Let the visitor choose, or a single language from your active list. Use a single language when a calculator is embedded on a single-language page and you don't want a language switcher cluttering it.
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