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Statistics

Analyze data sets with mean, median, standard deviation, and probability tools.

14 Calculators

Browse Statistics

Standard Deviation Calculator

Calculate standard deviation and variance

Mean, Median & Mode Calculator

Find the mean, median, and mode of a data set

Sum Calculator

Calculate the sum of a list of numbers

Probability Calculator

Calculate probability of single and combined events

Percentile Calculator

Find the percentile rank of a value in a data set

Z-Score Calculator

Calculate the z-score of a value

Correlation Coefficient Calculator

Calculate correlation between two data sets

Range Calculator

Find the range of a data set

Outlier Calculator

Detect outliers in a data set using IQR method

Sample Size Calculator

Calculate the required sample size for a survey

Confidence Interval Calculator

Calculate a confidence interval for a sample mean

Binomial Probability Calculator

Calculate binomial distribution probability

Quartile Calculator

Calculate Q1, Q2, and Q3 of a data set

Covariance Calculator

Calculate covariance between two data sets

FAQ

Frequently Asked Questions

Are all Statistics calculators free?

Yes, every calculator on this site is completely free to use with no sign-up required.

How accurate are these calculators?

Each calculator uses standard, widely-accepted formulas for its category. Results are for informational purposes - verify with a professional for critical decisions.

Do I need to install anything?

No - every calculator runs directly in your browser. Nothing to download or install.

Can I use these calculators on mobile?

Yes, every calculator is fully responsive and works on phones, tablets, and desktops.

Is my data saved when I use a Statistics calculator?

No - all calculations happen in your browser and nothing is stored or transmitted.

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