Sports Calculators

Sports calculators turn raw box-score numbers into the standard percentages and rates that players, coaches, and fans use to compare performance. Across different sports the idea is the same: take a count of successful actions, divide it by a count of attempts or chances, and express the result as a percentage or a rate. What changes from sport to sport is exactly what counts as a success and what counts as an attempt, which is where most confusion, and most miscalculation, comes from.

Every tool in this section follows the official definition of its stat, states the formula in plain words, and shows a worked example, so the number is easy to trust and easy to redo by hand. Because the same play can often be counted more than one way, each page is careful about what belongs in the numerator and the denominator, and notes where a stat needs context, such as role, opponent, or sample size, rather than standing on its own. For the formulas on their own, see the formula reference.