Math & Statistics Calculators
Solve math and statistics problems instantly - z-scores, t-distribution critical values, confidence intervals, paired t-tests, chi-square, percentages, and algebra tools.
10 calculators3 categories2 popular tools
Popular Math & Statistics Calculators
Statistics
Z-Score CalculatorPopularConvert a value to a standard score and find its percentile.Open calculator T-Distribution Critical Values CalculatorExact t* for any df and confidence level, plus a full t-table.Open calculator Confidence Interval CalculatorBuild a mean CI with the right z or t multiplier and margin of error.Open calculator Paired T-Test CalculatorTest before/after data: t statistic, p-value, and effect size.Open calculator Chi-Square Test CalculatorTest of independence: statistic, p-value, and expected counts.Open calculator
Arithmetic
Tip CalculatorRestaurant tip, total, and per-person split with a round-tip shortcut.Open calculator Percentage CalculatorPopularFind a percent of a number, what % one is of another, or the change.Open calculator Scientific Notation ConverterConvert decimals to scientific notation and back, plus multiply/divide.Open calculator
Algebra
Math & Statistics Calculator FAQs
What statistics calculators are available?
Z-Score, T-Distribution critical values, Confidence Interval, Paired T-Test, and Chi-Square calculators are all included with formulas and full result tables.
How do I find the t critical value?
The T-Distribution calculator returns exact t* for any degrees of freedom and confidence level, plus a full t-table reference.
Can I run a paired t-test?
Yes. Enter before/after data and the calculator returns the t statistic, p-value, and effect size for matched-pairs analysis.
Are algebra calculators included?
Yes - Pythagorean theorem and Quadratic Formula calculators solve right-triangle and ax²+bx+c=0 problems with real and complex roots.