Japanese ↔ English
Translate Japanese to English by Voice in Real Time
For business meetings, travel in Japan, or watching anime and Japanese shows, Whisperr translates spoken Japanese to English — and English back to Japanese — live, with about 0.2 seconds of latency. Two-way, auto-detecting, and ready for conversations, calls, and video.
This is a sample. Tap Record to sign up free and translate live, both ways.
Speak Japanese, hear English — voice translation with your microphone
Tap the mic and start speaking — Whisperr listens to spoken Japanese through your microphone and translates it to English in about 0.2 seconds, read aloud or shown on screen. No typing and no text boxes: real-time voice translation built for actual conversation.
It works in both directions automatically: speak English back and it returns Japanese. One phone between two speakers is enough for a whole conversation. Try it with your own voice in the live demo above — free, no sign-up.
How to translate Japanese and English live
Three ways to use it — face-to-face, on a call, or while watching video.
Built for live conversation
Everything you need for Japanese ↔ English
Real-time, two-way voice translation — not a file-based or one-way tool.
Two-way, auto-detect
Speak Japanese or English and Whisperr detects which and translates the other way — no toggling.
Real-time
Translation in about 0.2 seconds, fast enough for natural back-and-forth.
Dialects & accents
Handles polite and casual registers and natural conversational Japanese, including business keigo.
Read or hear it
Show the translation on screen or have Whisperr speak it aloud.
Every device
Native iOS, iPad, Mac, and Android apps, plus a web app and Chrome extension.
Broadcast Mode
Share a room link so others read your translated Japanese or English in their browser — no app needed.
Speak Japanese and English without the barrier
Start your next conversation, call, or video with live translation — free to try.
Start Translating FreeWhat to expect translating Japanese and English live
Japanese drops subjects routinely and bakes politeness into verb endings (keigo), so context drives the translation. Whisperr’s speech recognition covers the Japanese spoken across Japan.
English keeps a fixed subject-verb-object order and no grammatical gender, so it is often the structurally simpler side of a pair. Recognition likewise covers the English of North America, the United Kingdom, and far beyond.
The transcript shows each side in its own writing system: kanji together with hiragana and katakana for Japanese, the Latin alphabet for English. Because Whisperr auto-detects which of the two languages is being spoken, Japanese to English conversations flow in both directions without switching anything by hand.
What users say
Top-Notch Speech Recognition and Flashcard-Style Translations for Fast Study
“Whisperr's speech recognition and translation quality are both top-notch, and better than similar tools I've tried so far. As a Japanese learner, I especially like how Whisperr displays each sentence and its translation almost like flashcards, with a text-to-speech button for each one. Whisperr has removed a huge barrier to interacting with foreign-language speakers in real time, and to consuming video content that doesn't already have a translation.”
Awesome
“This is very useful, extremely user-friendly, easy to use, and the recognition capability is very precise, with very fast speed. It should be the most accurate and fastest translation I've used so far.”
Easy to use
“Whisperr is easy to get started and no hassle at all. A great tool to learn languages and for travelling.”
Exceptional outcomes
“I attempted English to Hindi translation and achieved highly accurate results.”
Amazing
“Using it for Spanish to English and it’s amazing!”
Worth hundreds of thousands of yen
“The same performance as other conversation translation apps. Those charge by the minute, but this one is apparently a one-time purchase, so the value for money is outstanding. Compared with about five similar apps, this one is the best on both performance and price. I wonder whether it was made by a Japanese developer??”
Translated from Japanese
Japanese to English translation FAQ
Can I translate Japanese to English by voice in real time?+
Does it translate both directions?+
Does it handle polite (keigo) and casual Japanese?+
Can I use it to watch anime or Japanese TV?+
Where can I use it?+
Is it free?+
Which Japanese varieties does Whisperr understand?+
How different are Japanese and English?+
Ready to translate Japanese and English live?
Break the language barrier in any conversation, call, or video.
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