The Statistics Calculator is a free online tool that comprehensive statistical analysis: mean, median, mode, variance, std dev, iqr, quartiles, percentiles, outlier detection, skewness, kurtosis, histogram, and box plot.. It runs entirely in your browser with no installation or sign-up needed.

Arithmetic (standard), geometric (for growth rates, positive values only), and harmonic (for rates/ratios, positive values only).

IQR method: values below Q1 - 1.5*IQR or above Q3 + 1.5*IQR are flagged. Highlighted in the data table and shown as dots on the box plot.

Skewness: near zero = symmetric, negative = left-skewed, positive = right-skewed. Excess kurtosis: positive = heavier tails than normal (leptokurtic), negative = lighter tails (platykurtic).

Yes, the Statistics Calculator is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.

Absolutely. The Statistics Calculator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Statistics Calculator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Statistics Calculator in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

The Statistics Calculator uses industry-standard formulas and algorithms to ensure accurate results. However, for critical financial or medical decisions, always consult a qualified professional.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.