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Real-world workflow

Use Case

Size a Survey Sample for 95% Confidence

Pick n for a survey at 95% confidence with a chosen margin of error.

16 August 2026 By Tools.Town Team 5 min read

Steps

  1. Open the Sample Size Calculator.
  2. Leave confidence at 95% and set your margin of error (often 5%).
  3. Keep proportion at 50% unless you know better.
  4. If the audience is a known finite list, enter that population size.

Frequently Asked Questions

Finite population?

Enter the population size to shrink n with the finite-population correction.