About Lexablocks

Lexablocks is a project meant to help people learn languages in a compartmentalized way. You paste a sentence in any of fourteen languages and the tool breaks it into clickable blocks — one for each meaningful piece. Tap any block and you get an in-context grammar explanation, in whichever language you already know: what this word is, what role it's playing in this sentence, and how it connects to what comes before and after it.

The mental model is play blocks. Each block is small enough to hold in your head on its own. Once you understand each one, they slot together and the whole sentence makes sense — not as a translation memorized, but as a structure you can see.

Under the hood, Lexablocks uses a large language model to do the grammar work. The model reads the sentence, segments it into meaningful pieces, labels each piece by its grammatical role, and generates an explanation tailored to the surrounding context. The result is not a dictionary lookup; it's a tutor-style breakdown where context matters — the same piece can mean different things in different sentences, and the explanation adapts.

The site supports fourteen languages in both directions — Japanese, Korean, Mandarin Chinese, Spanish, French, German, Swedish, Italian, Portuguese, Arabic, Persian (Farsi), Hindi, Russian, and English. Any of them can be the language you're breaking down, and any of them can be the language the explanations are written in. So an English speaker learning Japanese, a Spanish speaker learning Korean, or a Japanese speaker learning English all see explanations in the language they already think in.

Lexablocks is free. There's a daily limit per visitor to keep costs sustainable. If you have feedback, ideas, or want to say hi, use the contact page.