Scientific Calculator
Scientific keypad with history tape and copyable display.
Open toolMath & Calculators
Solve equations, convert units, and crunch numbers for STEM coursework.
Arithmetic & Algebra
7 tools
Fraction Calculator
Add, subtract, multiply, and divide fractions with steps.
Open toolQuadratic Equation Solver
Solve ax²+bx+c=0 with live discriminant and roots.
Open toolLCM & GCF Calculator
Find least common multiple and greatest common factor.
Open toolFactorial Calculator
Compute n! for permutations and combinations prep.
Open toolPermutation & Combination Calculator
Calculate P(n,r) and C(n,r) for probability homework.
Open toolLogarithm Calculator
Evaluate logs, change of base, and solve for x.
Open toolStatistics
3 tools
Mean Median Mode Calculator
Compute average, median, and mode from a data set.
Open toolStandard Deviation Calculator
Calculate sample or population standard deviation.
Open toolBinomial Probability Calculator
Calculate binomial distribution probabilities.
Open toolGeometry
6 tools
Pythagorean Theorem Calculator
Find the missing side of a right triangle.
Open toolArea Calculator
Calculate area for rectangles, circles, triangles, and more.
Open toolVolume Calculator
Find volume for cubes, cylinders, spheres, and cones.
Open toolSlope Calculator
Find slope between two points on a line.
Open tool2×2 Matrix Determinant
Calculate the determinant of a 2×2 matrix.
Open toolTriangle Calculator
Find sides, angles, and area from what you know.
Open toolFinance & Numeracy
6 tools
Percentage Calculator
Live percentage-of, percent-of-value, and change calculations.
Open toolRatio Calculator
Simplify ratios and solve proportion problems.
Open toolBinary Converter
Convert between binary, decimal, and hexadecimal.
Open toolSimple Interest Calculator
Compute simple interest for finance basics.
Open toolCompound Interest Calculator
Calculate compound growth for savings problems.
Open toolDepreciation Calculator
Calculate straight-line asset depreciation.
Open tool