Ever wondered how likely it is to flip five heads in a row? What does your data say about risk or uncertainty? Or how confident can you be in your survey results? These are statistics questions, and the answers are easier than you think. Our free online statistics calculators turn complex formulas into instant answers, so you can focus on understanding the “why” instead of wrestling with the math.

If you want to check averages, work with probability distributions, or calculate p-values and z-scores, our tools make it easy for you to do so. They’re most common in classrooms, labs, and even research papers, but they’re just as helpful if you’re prepping for an exam or satisfying your curiosity. From simple descriptive stats to deep inferential analysis, you’ll find tools here that help you decode data and make smart decisions.