Free Flashcard Retention Calculator
Calculate your flashcard retention rate and estimate how many cards you have truly memorized from your study sessions.
Retention Rate
78.0
Cards Needing Review22
Cards Learned per Session15.6
Retention Rate vs Total Flashcards
How to Calculate Flashcard Retention
Retention rate measures how many flashcards you can recall correctly.
Formula
Retention Rate = (Correctly Recalled / Total Cards) x 100
Aim for 85–95% retention. Below 85% means you are reviewing too many new cards. Above 95% means you can add more.
Example Calculation
A student has 100 flashcards, recalls 78 correctly after 5 study sessions.
- 01Retention rate = (78 / 100) x 100 = 78%
- 02Cards needing review = 100 - 78 = 22
- 03Cards learned per session = 78 / 5 = 15.6