Slovin’s Formula Calculator

In statistics, Slovin’s Formula is used to calculate the minimum sample sized needed to estimate a statistic based on an acceptable margin of error.

Slovin’s formula is calculated as:

n = N / (1 + Ne2)


  • n = sample size
  • N = population size
  • e = acceptable margin of error

To use Slovin’s formula, simply enter the population size and acceptable margin of error below and then click the “Calculate” button:

Population Size (N):

Acceptable Margin of Error (e):

Sample size (n): 200.000

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