Slovin’s Formula Calculator

The Slovin’s Formula Calculator estimates the sample size or calculates population size or margin of error. Input any two known variables to determine the missing one.

Slovin’s Formula Calculator is a tool designed to calculate sample size, population size, or margin of error for surveys or studies.

It is particularly useful in determining how many respondents are needed to ensure accurate and reliable results. The advanced calculator considers confidence levels for more precise calculations.

Formula

Basic Calculator:

1. Sample Size (n):

$$n = \frac{N}{1 + N \cdot e^2}$$

2. Population Size (N):

$$N = \frac{n – 1}{e^2 \cdot n}$$

3. Margin of Error (e):

$$e = \sqrt{\frac{N – n}{N \cdot n}}$$