Spaced Repetition Calculator
Calculate optimal SRS intervals using the spaced repetition algorithm for effective long-term memorization.
SRS Parameters
Higher = longer intervals (2.5 is default)
SM-2 Algorithm
Interval(n) = Interval(n-1) x EaseFactor
First interval: 1 day, Second: 6 days
Final Interval
94 days
Total span: 153 days
Adjusted Ease
2.50
Est. Retention
90%
Reviews/Month
1.0
Total Reviews
5
Review Schedule
Review #1
Day 1(+1 days)
Review #2
Day 7(+6 days)
Review #3
Day 22(+15 days)
Review #4
Day 60(+38 days)
Review #5
Day 153(+94 days)
About Spaced Repetition
How It Works
Spaced repetition optimizes review timing based on the forgetting curve. Items are reviewed just before you would forget them, strengthening long-term memory.
Ease Factor Tips
Start with 2.5 for new material. Increase for easy content, decrease for difficult material. Never go below 1.3 to avoid burnout.