Math & Numbers
Calculate exact and cumulative probabilities for sampling without replacement
hypergeometric-distribution-calculatorMath & Numbers
Calculate union, independent intersection, complement, and at-least-one probabilities
probability-calculatorMath & Numbers
Calculate Pearson r, r squared, covariance, and confidence interval for paired numeric data
pearson-correlation-calculatorMath & Numbers
Calculate one or more percentiles for a numeric dataset with linear, nearest-rank, or exclusive methods
percentile-calculatorMath & Numbers
Calculate population standard deviation from population variance using the n denominator
population-standard-deviation-calculatorMath & Numbers
Calculate population variance with the n denominator for a complete numeric dataset
population-variance-calculatorMath & Numbers
Find all real and complex roots of a polynomial from a coefficient list using a numerical root finder
polynomial-roots-calculatorMath & Numbers
Break an integer into prime factors, show the factorization string, and optionally include divisor properties and factorization steps
prime-factorization-calculatorMath & Numbers
Raise a base to any real exponent, with optional scientific notation and verification details
power-calculatorDeveloper Tools
Detect strikethrough-marked text in review PDFs and generate a report for contract, policy, and revision analysis
pdf-strikethrough-review-extractorMath & Numbers
Round numbers to integers, decimal places, tens, or hundreds using a simple rounding mode selector
rounding-calculatorMath & Numbers
Solve proportion equations of the form a/b = c/d and calculate the missing term
proportion-calculator