Adjust the values, then select Calculate to see the result.
Confidence Level
90%
95%
99%
Margin of Error
%
How far off you are willing to be, ± percent.
Population Proportion
%
Use 50% for the safest (largest) sample.
Population Size
Optional — leave blank for a very large population.
Calculate
Clear
Result
Enter your values, then select Calculate.
powered by CalcPad