Math Calculators

Calculate percentages, percentage change, and percentage of a number

Calculate mean, median, mode, standard deviation, and more

Solve linear equations, quadratic equations, and polynomials

Calculate area, perimeter, volume, and surface area

Calculate sine, cosine, tangent, and inverse functions

Sine, cosine, and tangent of any angle

arcsin, arccos, and arctan to find angles

Reciprocal trig functions secant, cosecant, cotangent

Convert between degrees and radians

Find the acute reference angle and quadrant

Find positive and negative coterminal angles

(cos θ, sin θ) coordinates on the unit circle

Solve sides and angles using SOHCAHTOA

Solve triangles using a/sin A = b/sin B = c/sin C

Solve SAS and SSS triangles

Solve any triangle from SSS, SAS, ASA, or AAS

Area from base/height, SAS, or Heron's formula

Pythagorean theorem solver

Special right triangle with 1 : √3 : 2 ratio

Isosceles right triangle with 1 : 1 : √2 ratio

Verify Pythagorean and reciprocal identities

Apply double-angle and half-angle formulas

Sum-to-product and product-to-sum identities

Find elevation/depression from height and distance

Arc length and sector area from radius and angle