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Dutch to English speech translation API

Stream Dutch (Nederlands) speech and get English (English) back in real time. One WebSocket, ISO codes nl to en, and ultra-low latency for voice agents and live apps.

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Production-ready Dutch to English translation API

Real Dutch speech includes accents, regional dialects, code switching, and domain-specific vocabulary. Soniox recognizes it in a single model and streams English while the speaker is still talking.

Dutch and English both belong to the Indo-European > Germanic > West Germanic family, so cognates and shared structure carry over cleanly into the translated English output.

Soniox preserves formatting in the translated transcript, including names, numbers, addresses, IDs, and domain-specific terms.

A breakthrough in real-time Dutch to English translation

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Translate before the sentence ends

English meaning lands as Dutch is spoken, not after the caption catches up.

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Directional nl to en streaming

Set the source and target codes once. Both arrive in a single labeled token stream.

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High quality English output

Same model across every language, including historically underserved ones.

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Native-speaker Dutch STT accuracy

Accurate English translation starts with accurate Dutch recognition across accents and language switching.

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Names, numbers, and domain terms

Preserved across the pair, including phone numbers, emails, and IDs.

config.json
{
  "model": "stt-rt-v4",
  "translation": {
    "type": "one_way",
    "source_language": "nl",
    "target_language": "en"
  }
}

Dutch and English through a single stream

Dutch to English translation is built on top of Soniox Speech-to-Text API. Every spoken word is transcribed, and English translation streams mid-sentence in the same labeled token stream.

Turn it on by adding a translation block with source_language: "nl" and target_language: "en". It runs on the same WebSocket and the same model, with no extra round trip.

Live Dutch to English: written and spoken

Dutch to English speech-to-text

micLive Dutch speecharrow_right_altsubjectEnglish text

Translate live Dutch into written English with the Soniox STT API. Soniox streams the Dutch transcript and the English translation as speech happens.

Use it for English captions, subtitles, meeting translation, agent assist, and multilingual transcription.

Dutch to English speech-to-speech

micLive Dutch speecharrow_right_altvolume_upSpoken English

Build full spoken Dutch to English translation by combining Soniox STT and Soniox TTS. Soniox recognizes Dutch, translates it, and speaks English with low latency.

Use it for live interpreters, bilingual voice agents, travel assistants, and customer support.

Live Dutch to English translation in action

Stream Dutch to English one-way to push all speech into English, or two-way to keep a bilingual conversation flowing between the two languages.

voice_selection
Dutch speaker says: “We hebben straks een stand-up via Teams, dus ik pak liever de sprinter; minder crowded.”
translate
Translated into English in real time.

One-way translation

Translate live Dutch into English. Everyone in the conversation sees the same translated stream.

Ideal for live captions, multilingual meetings, broadcasts, lectures, and customer calls.

voice_selection
Dutch speaker talks in Dutch.
hearing
English speaker hears English.
voice_selection
English speaker replies in English.
hearing
Dutch speaker hears Dutch.

Two-way translation

Translate between Dutch and English for live bilingual conversation. Each side speaks naturally and hears the other in their own language.

Soniox supports real-time two-way translation between any two of 60+ supported languages.

Accurate on both ends of the pair

Soniox transcribes Dutch at 9.4% word error rate and English at 6.5% word error rate. Accurate recognition on both sides is what makes the translation reliable.

speech_to_text

Speech-to-Text

Native-speaker accuracy across 60+ languages, with support for multilingual speech, alphanumerics, speaker diarization, context.

translate

Translation

Real-time streaming translation across 3,600 language pairs, built for high quality and low delay across all supported languages.

text_to_speech

Text-to-speech

High-fidelity speech generation in 60+ languages, built for names, alphanumerics, language switching, and ultra-low-latency streaming.

Together, they create a complete real-time low-latency speech AI platform.

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About Dutch and English

Dutch has roughly 24,000,000 speakers across Netherlands, Belgium, and Suriname. English has roughly 1,500,000,000 speakers across United States, United Kingdom, Canada, and Australia.

Dutch was the language of colonial administration in Indonesia, South Africa, and parts of the Caribbean.

English is the most widely spoken language in the world when including both native and non-native speakers.

Dutch and English are closely related languages, which helps Soniox keep tone and meaning consistent across the pair.

Translate Dutch to any language

From Dutch to English, or Dutch to any of 60+ supported languages. All real-time.

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate English to Dutcharrow_right_alttranslateDutch speech translationarrow_right_alttranslateEnglish speech translationarrow_right_altarrow_right_altDutch to Afrikaansarrow_right_altarrow_right_altDutch to Germanarrow_right_alt

Frequently asked questions

How do I translate Dutch to English with the API?arrow_downward
Add a translation block to your real-time request with source_language "nl" and target_language "en". Soniox transcribes Dutch and streams the English translation over the same WebSocket.
Is Dutch to English translation real-time?arrow_downward
Yes. Soniox streams English while Dutch is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating English to Dutch?arrow_downward
That direction is supported too. See the English to Dutch page, or use two-way translation to run both directions in one session.
Dutch and English are both Indo-European > Germanic > West Germanic — does that affect quality?arrow_downward
Shared family structure and cognates generally help. Soniox uses the same model for every pair, so quality stays consistent whether the languages are closely related or not.
Does Soniox handle Dutch dialects and accents?arrow_downward
Yes. Soniox handles Dutch dialects like Hollandic, Brabantian, and Flemish in a single model, so English translation stays accurate across regions.
Which other providers support Dutch to English?arrow_downward
Based on their public docs, OpenAI, Google, Azure, and Speechmatics list both Dutch and English for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is Dutch to English translation?arrow_downward
Soniox streams English as Dutch is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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