AtlasCalc🧮 Math Calculators
Percentages, fractions, statistics, equation solver.
Determinant, inverse, transpose, and scalar multiplication of 2×2 matrices.
det = ad − bc; inv = (1/det)·[[d,−b],[−c,a]]
CalculateCalculate percentages, what-percent, and percent change.
result = base × (rate / 100)
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Add, subtract, multiply, divide and simplify fractions.
a/b ± c/d = (a·d ± b·c) / (b·d); simplify by GCD
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Greatest common divisor and least common multiple of two numbers.
gcd(a,b) by Euclid: gcd(a,b) = gcd(b, a mod b); lcm(a,b) = (a·b) / gcd(a,b)
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math
Check if a number is prime, or list all primes up to N.
Trial division up to √n; or Sieve of Eratosthenes for ranges
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math
Mean, median, mode, range, variance, and standard deviation of a list.
mean = Σx/n; median = middle value; std = √(Σ(x − mean)² / n)
Calculate Solve for the unknown in a proportion a/b = c/d.
a/b = c/d → c = a·d / b
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math
Find the real roots of a linear (ax + b) or quadratic (ax² + bx + c) equation. Visualize the polynomial on a graph.
equation · polynomial · root
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