Free Online Sample Size Calculators

Find the right number of participants for your research or survey with our free online sample size calculators. Whether you are conducting academic research, business surveys, or market studies, these tools help you determine the ideal sample size quickly and accurately.

Our calculators use well-known statistical formulas such as Cochran’s, Slovin’s, and Taro Yamane. This makes it easy to choose the right method for your study. You can estimate the sample size needed based on confidence levels, population size, and margin of error without doing any manual calculations.