P-Hat Calculator
Calculate the sample proportion (p̂), standard error, and confidence interval from successes and sample size
About the P-Hat Calculator
The P-Hat Calculator is a free online tool from zCalculators that helps you calculate the sample proportion (p̂), standard error, and confidence interval from successes and sample size It runs entirely in your browser, returns results instantly as you change inputs, and works on desktop and mobile without any signup or installation.
Frequently asked questions
What is the P-Hat Calculator?
Calculate the sample proportion (p̂), standard error, and confidence interval from successes and sample size
How do I use the P-Hat Calculator?
Enter your values into the P-Hat Calculator above. Results update instantly as you type — no signup or installation required. You can copy results, share the page, or embed the calculator on your own site.
Is the P-Hat Calculator free to use?
Yes. The P-Hat Calculator on zCalculators is completely free, requires no signup, and runs entirely in your browser. We don't store your inputs.
How accurate is the P-Hat Calculator?
The P-Hat Calculator uses standard, well-established formulas. Results are accurate for the inputs you provide, but should be treated as estimates and not a substitute for professional advice.