About

What is this?

Japanese Conjugation Practice is a free tool for drilling Japanese verb and adjective conjugation. It gives you a word and a target form, and you answer — either by picking from multiple choices or typing it yourself.

What it covers

The app currently includes words from all five JLPT levels (N5–N1), covering three word categories:

• Verbs (ichidan, godan, and irregular)
• い-adjectives
• な-adjectives

Each word can be practiced across a range of conjugation forms including te-form, negative, past, polite, potential, passive, causative, conditional, volitional, and more.

Note: JLPT does not publish official vocabulary lists. The levels used here are based on widely used community word lists and may not exactly match the current exam content.

How to use it

Open the practice page and start answering. Use the settings (gear icon in the header) to customize your session:

• Script — show words in kanji with furigana, or hiragana only
• Answer mode — multiple choice or free text input
• JLPT level — filter words by level
• Word types — focus on verbs, い-adjectives, な-adjectives, or any combination
• Conjugation forms — choose which forms to practice

Your settings are saved in your browser so they persist between sessions.

Works offline

The app is a Progressive Web App (PWA). After your first visit, it works offline — useful for practicing on the go without an internet connection. You can also install it to your home screen on mobile.

Free and open

This app is completely free, with no accounts or sign-ups required. All data stays on your device. If you have feedback, suggestions, or find a bug, feel free to get in touch. If you'd like to support the project, consider making a donation.