Math & Numbers
Perform structured arithmetic and analysis for complex numbers in algebraic and polar form
complex-number-calculatorMath & Numbers
Compute the 2D signed area or 3D cross product between two vectors
cross-product-calculatorMath & Numbers
Solve cubic equations, classify the root pattern, and show Cardano-style intermediate values
cubic-equation-solverMath & Numbers
Solve linear equations of the form ax + b = 0 using coefficients or a typed equation
linear-equation-solverMath & Numbers
Calculate the nth term, first terms, and finite sum of an arithmetic sequence
arithmetic-sequence-calculatorMath & Numbers
Calculate the nth term, first terms, and finite sum of a geometric sequence
geometric-sequence-calculatorMath & Numbers
Calculate antilogarithms for any valid base and optionally verify the result by applying the logarithm again
antilog-calculatorMath & Numbers
Calculate the greatest common divisor and least common multiple for two or more integers
gcd-lcm-calculatorMath & Numbers
Calculate logarithms with any valid base, with optional log10, log2, and natural-log comparisons
logarithm-calculatorMath & Numbers
Calculate cube roots for positive or negative numbers and verify the cubed result
cube-root-calculatorDevelopment
Calculate CSS selector specificity scores, compare multiple selectors, and get suggestions for avoiding cascade conflicts
css-selector-specificity-calculatorMath & Numbers
Calculate the absolute value of positive, negative, or decimal numbers and explain the sign relationship
absolute-value-calculator