Geometry
Calculate areas, perimeters, volumes, and trigonometric functions.
Circle Calculator
Free circle calculator to compute the area, circumference, and diameter of a circle from its radius. Instant results with step-by-step formulas.
Distance Formula Calculator
Free distance formula calculator to find the straight-line distance between two points (x₁,y₁) and (x₂,y₂) using the Euclidean distance formula.
Law of Cosines Calculator
Free law of cosines calculator to find unknown sides or angles of a triangle. Solve oblique triangles with the cosine rule formula step by step.
Law of Sines Calculator
Free law of sines calculator to find unknown sides or angles of a triangle. Solve any triangle using the sine rule with instant step-by-step results.
Midpoint Calculator
Free midpoint calculator to find the exact midpoint between two coordinate points. Also computes the distance and slope between the two points.
Pythagorean Theorem
Free Pythagorean theorem calculator to find the hypotenuse or a missing side of a right triangle using a² + b² = c². Fast and accurate results.
Slope & Line Equation Calculator
Free slope and line equation calculator to compute the slope, y-intercept, and equation of a line from two points. Get slope-intercept form instantly.
Trigonometry Calculator
Free trigonometry calculator to compute sine, cosine, tangent, and their inverses for any angle in degrees or radians. Essential for math and engineering.