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English to Dutch speech translation API

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

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Production-ready English to Dutch translation API

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

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

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

A breakthrough in real-time English to Dutch translation

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Translate before the sentence ends

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

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Directional en to nl streaming

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

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High quality Dutch output

Same model across every language, including historically underserved ones.

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Native-speaker English STT accuracy

Accurate Dutch translation starts with accurate English 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": "en",
    "target_language": "nl"
  }
}

English and Dutch through a single stream

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

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

Live English to Dutch: written and spoken

English to Dutch speech-to-text

micLive English speecharrow_right_altsubjectDutch text

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

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

English to Dutch speech-to-speech

micLive English speecharrow_right_altvolume_upSpoken Dutch

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

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

Live English to Dutch translation in action

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

voice_selection
English speaker says: “Oh, FYI, the client moved the demo to 9:30, so we’re not totally sprinting.”
translate
Translated into Dutch in real time.

One-way translation

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

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

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

Two-way translation

Translate between English and Dutch 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 English at 6.5% word error rate and Dutch at 9.4% 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 English and Dutch

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

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

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

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

Translate English to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Dutch to Englisharrow_right_alttranslateEnglish speech translationarrow_right_alttranslateDutch speech translationarrow_right_altarrow_right_altEnglish to Germanarrow_right_altarrow_right_altEnglish to Afrikaansarrow_right_alt

Frequently asked questions

How do I translate English to Dutch with the API?arrow_downward
Add a translation block to your real-time request with source_language "en" and target_language "nl". Soniox transcribes English and streams the Dutch translation over the same WebSocket.
Is English to Dutch translation real-time?arrow_downward
Yes. Soniox streams Dutch while English is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating Dutch to English?arrow_downward
That direction is supported too. See the Dutch to English page, or use two-way translation to run both directions in one session.
English and Dutch 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 English dialects and accents?arrow_downward
Yes. Soniox handles English dialects like American English, British English, and Australian English in a single model, so Dutch translation stays accurate across regions.
Which other providers support English to Dutch?arrow_downward
Based on their public docs, OpenAI, Google, Azure, and Speechmatics list both English and Dutch for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is English to Dutch translation?arrow_downward
Soniox streams Dutch as English is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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