Math & Statistics

Math & Statistics Calculators

Work through the everyday math that shows up in study, work, and life — percentages and change, averages and spread, ratios and fractions, plus a full scientific calculator. Each tool shows the formula and a worked example so you can check the method, not just copy the answer.

Percentages

MathPercentage CalculatorSolve the everyday percentage questions — X% of a number, what percent one number is of another, and more.Best for: Fast, reliable percentage math.MathPercentage Change CalculatorFind the percentage increase or decrease between two values, with the absolute difference shown too.Best for: Comparing before-and-after figures.

Statistics

MathAverage CalculatorCalculate the mean of a set of numbers, along with the count and sum, from a list you enter.Best for: A quick mean of any dataset.MathMean Median Mode CalculatorFind the mean, median, mode, and range of a dataset together, with each measure explained.Best for: Summarising a dataset’s centre and spread.MathStandard Deviation CalculatorCompare sample and population standard deviation, variance, mean, range, and deviations from the mean.Best for: Measuring how spread out a dataset is.MathVariance CalculatorCalculate the variance of a dataset for both sample and population, with the mean and squared deviations.Best for: Quantifying variability in data.MathZ-Score CalculatorFind how many standard deviations a value sits from the mean, and what that implies on a normal curve.Best for: Standardising and comparing data points.

Numbers

MathFraction CalculatorAdd, subtract, multiply, and divide fractions, with the result simplified to its lowest terms.Best for: Working with fractions step by step.MathRatio CalculatorSimplify ratios, scale them up or down, and solve for a missing term in a proportion.Best for: Scaling recipes, mixes, and proportions.MathScientific CalculatorA full scientific calculator with powers, roots, logarithms, and trigonometric functions.Best for: Advanced calculations beyond basic arithmetic.

Frequently asked questions

Common questions about math calculators and how to use them.

What calculators are in Math & Statistics?

Percentages and percentage change, averages and spread (average, mean/median/mode, standard deviation, variance, z-score), numbers (fractions and ratios), and a full scientific calculator. Each shows the formula and a worked example.

Can I use these for homework?

Yes. Every page shows the formula and a worked example, so you can check your answer and learn the steps rather than just copy a result. Working through the example yourself is the best way to understand the method.

What is the difference between sample and population standard deviation?

Population standard deviation divides by N and is used when your data is the entire group. Sample standard deviation divides by N − 1 and is used when your data is a sample of a larger group. The standard deviation and variance calculators show both.

Are the results accurate?

Yes — each result comes from a transparent formula shown on the page, and the worked examples are checked against it. For graded coursework or engineering work, confirm the method and rounding match what your instructor or standard requires.

Explore other categories

Browse the other calculator categories on Calculator Matters.

All calculators
FinanceMortgages, loans, interest, savings, and retirement planning.InvestingProject growth, returns, and income from your investments.TaxEstimate income tax, sales tax, VAT, GST, and take-home pay.Budget & CreditBudgets, debt payoff plans, credit cards, and net worth.Business & EcommerceMargins, break-even, ad returns, and unit economics.Date, Time & HealthAge, dates, durations, BMI, and daily calories.