The verdict in three sentences
A 4-language website costs in 2026 between EUR 11,000 and 24,000 in Singapore, each extra language adding EUR 800 to 2,200 (content, hreflang, QA). The key variable is translation: EUR 0.12 to 0.20/word for human professionals versus EUR 0.05 to 0.09/word for post-edited AI. The costly mistake is not translation but mis-wired international SEO (missing hreflang, confusing URLs), which cancels the export investment.
Per-language cost broken down
Adding a language is not just translating: it is adapted content, technical markup and QA. Here is the 2026 detail for one extra language.
| Line item | 2026 range (EUR) | Detail |
|---|---|---|
| Translation (~8,000-word site) | 400 - 1,600 | Pro vs post-edited AI |
| Local SEO adaptation | 200 - 500 | Target-market keywords |
| hreflang + technical markup | 150 - 400 | i18n configuration |
| Linguistic QA + testing | 150 - 400 | Native proofing, display |
| Total per language | 900 - 2,900 | Median ~1,500 |
For 3 additional languages (ZH, ID, AR), plan for EUR 2,700 to 8,700 on top of the base EN site. Arabic adds RTL handling, i.e. +15 to +25 % on the integration lot.
Professional translation, post-edited AI or auto plugin?
The choice directly impacts budget and export credibility. Here is the 2026 comparison.
| Criterion | Pro translation | Post-edited AI | Auto plugin |
|---|---|---|---|
| Cost / word | EUR 0.12 - 0.20 | EUR 0.05 - 0.09 | ~EUR 0.01 |
| B2B quality | Excellent | Good | Risky |
| Timeline (8,000 words) | 2 - 3 weeks | 4 - 7 days | Instant |
| Local SEO | Optimised | Fair | Weak |
| Export credibility | High | Medium-high | Low |
| Recommended for | Key pages | Volume content | Avoid in B2B |
The winning 2026 strategy: pro translation on the 10-15 strategic pages and post-edited AI on volume content (blog, secondary sheets).
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Mini case study
Sarah, export director of a 45-person industrial components SME in Singapore, targeting China, Indonesia and the Gulf. She invests EUR 18,500: base EN site (EUR 10,000) + 3 languages (ZH, ID, AR) with pro translation on 12 key pages and post-edited AI elsewhere, RTL handling included.
Previously, 4 % of her traffic came from abroad. Six months later, with correct hreflang and localised content, international traffic reaches 19 %, generating 7 export enquiries/month versus 1 before. On an average export deal of EUR 24,000 and 15 % conversion, that means ~1 extra export order per month, paying off the multilingual add-on (~EUR 8,500) in one quarter.
FAQ
How much does each extra language cost? Between EUR 800 and 2,200 on median, including translation, local SEO adaptation, hreflang and QA. Arabic costs more due to RTL handling.
Human translation or AI? Pro translation (EUR 0.12-0.20/word) on strategic pages, post-edited AI (EUR 0.05-0.09/word) on volume. Avoid auto-translation plugins in B2B: they hurt credibility and SEO.
What is hreflang and why is it critical? It is the markup telling Google which language version to serve to which visitor. Misconfigured, it cannibalises your SEO and cancels the export investment.
Native i18n or a multilingual plugin? A framework with native i18n (Next.js) cleanly handles URLs, hreflang and performance. CMS plugins suit small sites but weigh on maintenance beyond 3 languages.
What timeline for a 4-language site? Plan for 10 to 16 weeks, translation and linguistic QA being the most time-consuming steps, especially with RTL.
Let's scope your project. Tell us your target markets and languages: we'll cost the base site (EUR 11,000-24,000) and the per-language add-on. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
