Required sample size caculator

Used to find sample size required for a given population and margin of error at 95% confidence level

Enter your required percentage margin of error

Enter Population

Your required sample size is:

How to calculate sample size for a given margin of error

Sample Formula

z= z-score (we use 1.96 here for the 95% confidence level)

e= margin of error

p= at which proportion/percentage do we want the error that we've specified? Here we use 0.5 (50%), which is when the error is maximum. This results in the minimum required sample for a to give an error of maximum e

N= population size