StreamTranslate supports real-time translation across 30+ language options. The table below uses internal QA status instead of unsupported precision claims, so buyers see a clearer view of coverage without misleading exact accuracy percentages.
| Code | Language | Translation Quality | QA Status | Tier |
|---|---|---|---|---|
| en | English | Native | Native baseline | Tier 1 |
| es | Spanish | Excellent | Native-speaker QA | Tier 1 |
| fr | French | Excellent | Native-speaker QA | Tier 1 |
| de | German | Excellent | Native-speaker QA | Tier 1 |
| pt | Portuguese (BR/PT) | Excellent | Native-speaker QA | Tier 1 |
| it | Italian | Excellent | Native-speaker QA | Tier 1 |
| nl | Dutch | Excellent | Native-speaker QA | Tier 1 |
| sv | Swedish | Excellent | Native-speaker QA | Tier 1 |
| da | Danish | Excellent | Native-speaker QA | Tier 1 |
| no | Norwegian | Excellent | Native-speaker QA | Tier 1 |
| ja | Japanese | Very Good | Strong QA coverage | Tier 1 |
| ko | Korean | Very Good | Strong QA coverage | Tier 1 |
| zh | Chinese (Mandarin) | Very Good | Strong QA coverage | Tier 1 |
| ru | Russian | Very Good | Strong QA coverage | Tier 1 |
| pl | Polish | Very Good | Strong QA coverage | Tier 1 |
| tr | Turkish | Very Good | Strong QA coverage | Tier 1 |
| fi | Finnish | Very Good | Strong QA coverage | Tier 1 |
| cs | Czech | Very Good | Strong QA coverage | Tier 1 |
| bg | Bulgarian | Good | QA active | Tier 1 |
| sk | Slovak | Good | QA active | Tier 1 |
| sr | Serbian | Good | QA active | Tier 1 |
| ar | Arabic (MSA) | Good | QA active | Tier 2 |
| hi | Hindi | Good | QA active | Tier 2 |
| id | Indonesian | Good | QA active | Tier 2 |
| vi | Vietnamese | Good | QA active | Tier 2 |
| th | Thai | Good | QA active | Tier 2 |
| ro | Romanian | Very Good | QA active | Tier 2 |
| hu | Hungarian | Very Good | QA active | Tier 2 |
| el | Greek | Good | QA active | Tier 2 |
| uk | Ukrainian | Good | QA active | Tier 2 |
Related: All Language Pages · Compare Alternatives · Homepage
StreamTranslate supports 30+ output languages and detects 40+ spoken source languages. Speech-to-text runs on Deepgram, and translation routes through the configured provider chain with paid backup providers where available. Quality varies by language pair, microphone clarity, and stream noise, so the app is designed for real-time stream captions rather than certified legal or medical translation.