Calculator Topic

Sample Size

Use our sample size calculators to estimate the number of participants or observations needed for your study. Choose Cochran’s formula, Slovin’s formula, or Yamane’s formula based on your population information, desired margin of error, and research design.

Calculators in This Topic

4 tools

Cochran’s formula Calculator

Open the calculator, enter your values, and get a clear result with helpful guidance.

Margin of Error Calculator

Use this margin of error calculator to estimate survey sampling error for finite, infinite, or unknown populations. Enter the sample size, confidence...

Slovin’s Formula Calculator

Open the calculator, enter your values, and get a clear result with helpful guidance.

Yamane’s Sample Size Calculator

Use this Yamane formula calculator to find the required sample size for a known finite population using your chosen margin of error....