// multi-utility computation suite · offline · instant · precise
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edu.forgetting-curve-retention Calculator
Calculates the Ebbinghaus forgetting curve — what percentage of information is retained at a given time after initial learning without review. Without review at 24 hours, roughly 70% of new information is lost — the basis of spaced repetition scheduling.
Inputs
Retention Pct At Day1
Reference formula or conversion factor shown for context.
Stability Factor
A multiplier applied in the calculation.
Days Since Learning
Reference formula or conversion factor shown for context.
Results
retention after
Sample size or count used in the calculation.
memory lost
LOS (length of stay) -- the number of days from admission to discharge. A key hospital efficiency metric.
Ebbinghaus: R = e^(-t/S)
Sample size or count used in the calculation.
stability factor S
Measure of how robust the system, structure, or process is to perturbations. Low stability means small changes can cause large deviations.
improve stability
Measure of how robust the system, structure, or process is to perturbations. Low stability means small changes can cause large deviations.
first review
Reference formula or conversion factor shown for context.