Math & Numbers
Find all real and complex roots of a polynomial from a coefficient list using a numerical root finder
polynomial-roots-calculatorMath & Numbers
Solve quadratic equations, classify the roots, and return discriminant, vertex, and factor information
quadratic-equation-calculatorMath & Numbers
Calculate permutations with or without repetition, plus circular arrangements, with formulas and optional steps
permutation-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-calculatorMath & Numbers
Solve proportion equations of the form a/b = c/d and calculate the missing term
proportion-calculatorMath & Numbers
Simplify ratios, calculate ratio shares, and convert between ratio, fraction, and decimal forms
ratio-calculatorData Processing
Remove specific values from an array using lodash _.pull
pull-valuesData Processing
Scan text/logs for potential PII (Personally Identifiable Information) and annotate positions and types for redaction and compliance checking
pii-finderText Processing
Format phone numbers into standard formats with separators for different countries
phone-number-formatterText Processing
Extract phone numbers from mixed text with support for multiple countries and formats
phone-number-extractorMedia
Generate icon packs (PNG sizes + favicon ICO) from a PNG source
png-to-icons