Math calculators
Algebra, geometry, percentages, and 2×2 matrix tools.
10 calculators
2×2 Matrix Determinant & Inverse
Find a 2×2 matrix determinant and inverse with clear steps, practical checks, and worked examples for linear transformations and systems.
3D Distance & Midpoint Calculator
Find the straight-line distance and midpoint between two 3D coordinates for modeling, mapping, geometry, and spatial analysis. Use the calculator above.
GCD & LCM Calculator
Calculate greatest common divisors, least common multiples, and a simple primality check for two integers with practical examples.
Gradient and Slope Calculator
Calculate grade percentage and slope angle from rise and horizontal run for ramps, roofs, trails, and engineering layouts. Use the calculator above.
Modulo Congruence Calculator
Find positive remainders and test modular congruence for integers, schedules, number theory, and programming examples. Use the calculator above.
Percentage Change Calculator
Calculate percentage increase or decrease between two values, or solve for an original or new value with clear examples. Use the calculator above.
Pythagorean Theorem Calculator
Use the Pythagorean theorem to calculate a missing right-triangle side in metric or imperial units with worked practical examples.
Quadratic Formula Solver
Solve quadratic equations, inspect the discriminant, and understand real roots with clear formula steps and numerical examples. Use the calculator above.
Triangle Calculator
Calculate a valid triangle’s perimeter, Heron’s-formula area, and angle opposite side a from three side lengths. Use the calculator above.
Vector Dot & Cross Product Calculator
Calculate 3D vector dot products, cross products, and angles with practical examples for geometry, physics, and computer graphics.