Flashcard Retention Calculator
Retention Estimate
Estimate how much you'll remember based on study sessions and time elapsed (Ebbinghaus model)
Flashcard Study Plan
Calculate how many cards to study per day to learn a set by a deadline
Formula
Retention = e^(-decay x days/10) x (accuracy/100)
Frequently Asked Questions
What is spaced repetition?
Spaced repetition is a study technique where you review information at increasing intervals. Cards you know well are shown less frequently, while difficult cards appear more often, optimizing memory retention.
How many flashcards should I study per day?
Most experts recommend learning 10-30 new cards per day while reviewing older cards. The exact number depends on card complexity and your available study time.