Multilingual website ROI calculator
Estimate the extra monthly and yearly revenue from going multilingual — and how fast localisation pays for itself.
What going multilingual adds
Buyers convert far better in their own language. The parity figure below 100% reflects a ramp-up: new markets take time to reach the conversion rate of your home market.
Indicative estimate based on your inputs. Real results depend on search demand, competition and quality of localisation in each market.
Is going multilingual worth it?
Most European buyers prefer to buy in their own language, and many will not convert on a site they cannot fully read. Adding languages opens new markets without changing your product — but translation and localisation cost money up front, so it helps to size the return before you commit.
This calculator turns four simple assumptions — your current revenue, how many markets you add, the extra audience each one reaches, and how well those markets convert compared to home — into an estimated monthly and yearly revenue uplift, plus a payback period on your localisation spend. Use it to prioritise which languages to launch first and to sanity-check a localisation quote.
New markets rarely convert as well as your home market on day one. Brand recognition, trust signals, local payment methods and SEO all take time to build. A parity of 70% assumes new-language visitors convert at 70% of your home rate while that ramp-up happens — raise it as a market matures.
Ready to launch in more languages?
web1o builds fast, multilingual websites that convert in every market you enter — clean localisation, proper routing and SEO for each language. See how we can help you grow across Europe.