Calculate essential statistical measures including mean, median, mode, standard deviation, variance, and correlation. Perfect for data analysis, research, business analytics, and education.
Input your statistical measure in the "From" field. Our tools accept decimal numbers, fractions, and mathematical expressions.
Choose your source statistical measure and target measure from our comprehensive selection including central tendency, dispersion, and correlation.
View the calculated statistical measure in real-time. Copy results, explore common calculations, or check calculation history.
Use the mean when your data is normally distributed and has no significant outliers. Use the median when your data is skewed or contains outliers, as it's more robust and represents the typical value better in these cases.
A correlation coefficient (r) ranges from -1 to +1. Values close to +1 indicate strong positive correlation, values close to -1 indicate strong negative correlation, and values close to 0 indicate no linear relationship.
Standard deviation measures how spread out your data is from the mean. In a normal distribution, about 68% of data falls within ±1 standard deviation of the mean, 95% within ±2 standard deviations, and 99.7% within ±3 standard deviations.
Percentiles indicate the value below which a given percentage of observations fall. They're useful for understanding data distribution, identifying outliers, setting thresholds, and comparing individual values to the overall dataset.
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Convert text to Base64 format and decode Base64 strings
Format, validate, and minify JSON data with syntax highlighting and error detection
Convert between YAML and JSON formats with validation and formatting
Convert between astronomical distance units including AU, light years, parsecs, kilometers, and miles. Essential for astrophysics, space exploration, and astronomy education.
Convert between cooking units including cups, tablespoons, grams, ounces, and more. Perfect for recipe conversion, international cooking, and baking.
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Try combining multiple tools for a complete workflow. For example: Notepad → Text Encryption → Save to Cloud or Date Calculator → Calendar → Countdown Timer
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