Algebra, geometry, statistics, physics, chemistry & electronics calculators — solve problems instantly.
Average Calculator
Mean, median, mode, sum, range — instant statistics for any list of numbers.
Molar Mass Calculator
Compute the molar mass of any chemical formula — H₂O, NaCl, C₆H₁₂O₆…
Density Calculator
Solve density, mass or volume — ρ = m / V — for any two knowns.
Ohm's Law Calculator
Solve V = I × R for any one variable — voltage, current or resistance.
Resistor Color Code Calculator
Decode 4-band resistors from colors — and reverse value → colors.
Projectile Motion Calculator
Range, max height, time of flight — for any launch angle and velocity.
Percentage Change Calculator
Percent increase or decrease between two values — with multiplier.
Circle Calculator
Area, circumference, diameter — and 90° arc & sector — from radius.
Triangle Calculator
Area (Heron's), perimeter and angles from three sides.
Pythagorean Theorem Calculator
a² + b² = c² — solve for any side of a right triangle.
Quadratic Equation Solver
Solve ax² + bx + c = 0 — real and complex roots, with discriminant.
GCF & LCM Calculator
Greatest common factor and least common multiple of any integers.
Grade Calculator
Weighted class grade from assignments, exams and categories.
Matrix Calculator
Add, subtract, multiply and find determinants of 2×2 and 3×3 matrices.
Permutation & Combination Calculator
Compute nPr and nCr — order matters, or it doesn't.
Probability Calculator
P(A), P(A∪B), P(A∩B) — single and joint event probability.
Exponential Growth Calculator
A = P · e^(rt) — population, bacteria, compound growth.
Fibonacci Generator
Generate the first N Fibonacci numbers — arbitrary precision.
Prime Number Checker
Is a number prime? Instant yes/no with factor if composite.
Prime Number Generator
List the first N primes — or primes up to a limit.
Prime Factorization Calculator
Break any integer into its prime factors — 2² × 3 × 5, etc.
Linear Regression Calculator
Fit y = mx + b to (x, y) data points — with R² correlation.
Z-Score Calculator
z = (x − μ) / σ — with percentile and tail probability.
pH Calculator
pH from [H⁺] and reverse — with pOH, [OH⁻] and temperature.
Multiplication Table Generator
Generate an N×N multiplication table — with hover highlight & CSV.