Education
Education and Statistics Calculators
Work with grades, GPA, descriptive statistics, and regression. Every tool includes its formula, a worked example, limitations, FAQs, and references.
GPA Calculator
Calculate a credit-weighted GPA on a 4.0 scale.
Grade Calculator
Convert earned points into a percentage and typical letter grade.
Mean, Median and Mode Calculator
Find central-tendency measures for a list of numbers.
Standard Deviation Calculator
Calculate population or sample standard deviation and variance.
Linear Regression Calculator
Calculate slope, intercept, and R-squared for paired data.
Using these tools responsibly
Start with consistent units and realistic inputs. Treat estimates as planning aids and confirm decisions involving safety, regulation, tax, academic policy, or substantial cost with an authoritative source.