// multi-utility computation suite · offline · instant · precise
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sci.mark-recapture-population Calculator
Estimates population size using the Lincoln-Petersen mark-recapture formula: N = (M × C)/R, where M = marked, C = second sample, R = recaptures. Mark-recapture assumes closed population, no mark loss, and equal capture probability — Chapman correction reduces bias for small R.
Inputs
First Capture N
Reference formula or conversion factor shown for context.
Second Capture M
Reference formula or conversion factor shown for context.
Recaptured R
Reference formula or conversion factor shown for context.
Results
population estimate N (Lincoln-Petersen)
The value at the specified point or condition.
95% CI lower
Reference formula or conversion factor shown for context.
95% CI upper
Reference formula or conversion factor shown for context.