Never forget a word you look up. Create flashcards from everything you read online, or import your own lists. Study with spaced repetition, quizzes, and Smart Review — with translations in 20 languages.
Research consistently shows that learning improves when you actively recall information instead of re-reading, test yourself regularly, and review material at increasing intervals. Flashcards and quizzes support all three — when used correctly.
As you browse articles, documents, or learning materials, select any important word or term. See the English definition with synonyms and examples. Add your own notes or custom definition. Save with one click — the word, definition, full sentence context, source page, difficulty level, and translation are captured automatically and turned into a flashcard. Works on mixed-language pages too — English articles with words from other languages are handled seamlessly.
Already have study materials? Import via CSV from Anki, Quizlet, or any spreadsheet — Bellek auto-detects the format. Export your words anytime with full language support. Combine imported cards with cards you save while browsing, and study everything in one system.
Bellek isn't just a dictionary — you can use it as a standalone flashcard tool for any subject. Here's how: find what you want to study on any webpage, copy the text you'd want on the back of the flashcard (a definition, an explanation, a formula), then select the term or concept you want on the front. When the popup opens, paste your copied text into the notes field and click save. You now have a flashcard with your custom front and back — no dictionary needed.
This means you can use Bellek to study anything: biology terms, history dates, programming concepts, legal definitions, medical terminology, or even recipes. If it's on a webpage, you can turn it into a flashcard with spaced repetition.
Multilingual Flashcards: Every flashcard can include a translation into your preferred language (20 languages supported). See both the English definition and the translation during review. Especially useful for language learners and international students.
Words you know appear less. Words you struggle with appear more. The algorithm adapts to your pace. Free for all users.
Test active recall, not just recognition. See the context sentence, pick the right word. Identify weak areas faster. (Premium)
Shows only words you've marked as difficult or keep getting wrong. Maximum focus on what needs work. (Premium)
Streaks, mastery rates, weekly goals, session history, and personalized insights. Know exactly where you stand.
Create collections for different subjects, courses, exams, or goals. Study one collection at a time or all at once. Track progress per collection to know which areas need more attention. 3 collections free, unlimited on Premium.
Add flashcards on desktop while studying. Scan the QR code from your dashboard to get a unique sync URL. Open it on your phone or tablet to review anywhere — no app download needed. Toggle the definition popup on or off from the extension icon. Right-click "Look up in Bellek" works even when the popup is off.
Flashcards from real content. Spaced repetition. Quiz mode. Free to start.
Add to Chrome — Free