Calculator

Finding out the size of sample best suited for your research needs, or the gauging the confidence interval is easy and fast, with our online calculator.

Step One: Choose the the type of calculation
  Sample Size
(n for a given confidence level, p and CI)
  Confidence Interval
(CI for a given confidence level, p and n)

Step Two: Fill in all fields, leaving blank
the variable chosen in step one

(eg. If calculating Sample Size, leave the following fields blank: n, p & CI)

  Proportion: (p)
  Population: (N)
  Sample Size: (n)
  Confidence Level:
  Confidence Interval: +/- %   (CI)

Step Three: