Free statistics and math calculators with clear results and a short explanation of the method. Each tool shows how the answer is calculated.
Averages and spread
- Mean, Median and Mode Calculator
- Average Calculator (Mean, Median and Mode)
- Weighted Average Calculator
- Standard Deviation Calculator
- Variance Calculator
- Quartile Calculator
- Mean Absolute Deviation Calculator
- Geometric Mean Calculator
Probability and distributions
- Probability Calculator
- Binomial Distribution Calculator
- Normal Distribution Calculator
- Z-Score Calculator
- Empirical Rule Calculator
- Permutation and Combination Calculator
Confidence and sampling
Relationships and trends
Algebra and numbers
- Quadratic Equation Solver
- Exponent Calculator
- Logarithm Calculator
- Factorial Calculator
- Scientific Notation Calculator
- Square Root Calculator
- Cube Root Calculator
- Prime Number Checker
- GCF and LCM Calculator
- Ratio Calculator
- Decimal to Fraction Calculator
- Fraction Calculator