Calculate power & sample size for one-sample, two-sample and k-sample experiments. Advanced power and sample size calculator online: calculate sample size for a single group, or for differences …

Calculator to determine the minimum number of subjects to enroll in a study for adequate power.

Power consumption calculator: calculates electric power / voltage / current / resistance. Enter 2 values to get the other values and press the Calculate button: Voltage (V) calculation from current (I) and …

Sample size planning aims to select a sufficient number of subjects to keep α and β low without making the study too expensive or difficult. How many subjects do I need to find a statistical & meaningful …

We currently have 35 calculators, but we have a total of about 160 in the works!

Comprehensive electrical power calculator for DC, AC, and energy calculations. Calculate power, current, voltage, and energy consumption with detailed analysis and unit conversions.

Use our Power Calculator to explore these diverse applications. Calculate the horsepower of an athlete, the wattage of an appliance, or the power needed to overcome air resistance at highway speeds.

The electrical power calculator helps you compute the power consumed by electrical devices.

Click the Calculate button to instantly view the results for Watt Power, Apparent Power, Active Power, and Reactive Power. This tool is perfect for understanding energy consumption, optimizing electrical …

This section is intended to provide an intuitive discussion of the rationale behind power calculations, as well as practical tips and sample code for conducting power calculations using either built-in …