Flashcard Spacing Calculator
Calculate Leitner system review intervals, sessions needed, and days to mastery for your flashcard deck.
How to Use the Flashcard Spacing Calculator
- Enter total number of flashcards.
- Enter how many cards you study per day.
- Select difficulty level and click Calculate.
Anwendungsfälle
- •Language vocabulary learning.
- •Medical school exam preparation.
- •Certification study planning.
Formel
Formula: Leitner intervals scale by difficulty. Box 1: 1 day, Box 2: 3 days, Box 3: 7 days (×difficulty factor).
Häufig gestellte Fragen
What is the Leitner system?
The Leitner system is a spaced repetition method using boxes with increasing review intervals. Cards you know well move to higher boxes reviewed less often.
What is spaced repetition?
Spaced repetition schedules reviews at increasing intervals just before you would forget, maximizing long-term retention with minimum study time.
How many cards per day is optimal?
Most learners handle 20–50 new cards per day comfortably. More than 100/day creates unsustainable review load after a few weeks.