GCD & LCM Calculator
Greatest common divisor and least common multiple of any list, with steps.
Open Tool โSet Operations Calculator
Union, intersection, difference, and symmetric difference of two lists.
Open Tool โComplex Number Calculator
Add, multiply, and divide complex numbers; modulus, argument, and polar form.
Open Tool โUnit Circle Explorer
Interactive unit circle โ drag the angle to see sin, cos, tan, radians, and exact special-angle values.
Open Tool โMatrix Calculator
Add, subtract, multiply, transpose, and find the determinant or inverse of matrices up to 4ร4.
Open Tool โStatistics Summary Calculator
Mean, median, mode, quartiles, stdev, outliers, box plot, and histogram.
Open Tool โNumber to Words
Convert numbers to English words. Useful for cheques, legal documents, and forms.
Open Tool โPrime Factorizer
Is this number prime? Find its prime factors and show the factorization tree.
Open Tool โTriangle Solver
Give any 3 known values (sides/angles) and solve the rest using trig and law of cosines.
Open Tool โResistor Color Code
Read or calculate 4-band and 5-band resistor values from color bands.
Open Tool โOhm's Law Calculator
Solve for voltage, current, resistance, or power given any two values.
Open Tool โPercentage Calculator
What is X% of Y? X is what % of Y? Percentage change โ all three in one screen.
Open Tool โScientific Calculator
sin/cos/tan/log/ln/โ/exp/parentheses with keyboard support and memory functions.
Open Tool โFraction Calculator
Add, subtract, multiply, divide fractions. Simplify and convert fraction โ decimal.
Open Tool โQuadratic & Cubic Solver
Solve linear, quadratic, and cubic equations โ real & complex roots, discriminant, vertex, worked steps.
Open Tool โEquation Grapher
Plot one or more y = f(x) equations with pan, zoom, and PNG export. Supports sin/cos/log/sqrt/ฯ/e.
Open Tool โ