Japanese Voice Generator

Generate natural Japanese speech directly in your browser with our offline text-to-speech tool. Powered by Kokoro TTS, this tool processes all text locally on your device — nothing is sent to a server.

Available voices: 5 Japanese voices (4 female, 1 male) with quality ratings.

Japanese Pronunciation Guide:

• Pitch accent (高低アクセント): Japanese uses pitch accent patterns that distinguish word meanings. For example, 「橋」(bridge) is low-high, while 「箸」(chopsticks) is high-low. The TTS model handles common pitch patterns automatically, but adding context helps disambiguate homophones.
• Long vowels (長音): Words like 「先生」(sensei) and 「お母さん」(okaasan) require sustained vowel length. Write them with correct orthography — the model distinguishes between short and long vowels.
• Double consonants (促音): The small 「っ」creates a pause before the following consonant, as in 「がっこう」(gakkō, school). Always include these — they are critical for natural rhythm.
• Particle pronunciation: The topic marker 「は」is pronounced "wa," the direction marker 「へ」is pronounced "e," and the object marker 「を」is pronounced "o." Write them in standard Japanese and the phonemizer handles the correct readings.

Perfect for:

• Language learning and pronunciation practice
• Creating Japanese voice content for videos
• Accessibility tools for Japanese text
• Developing Japanese language applications

The model downloads once (~90MB for Small model) and is cached in your browser. After that, it works completely offline — on planes, trains, or anywhere without internet.