Math Formula Encyclopedia
Search, understand, and use formulas across arithmetic, algebra, geometry, trigonometry, calculus, statistics, finance, science, engineering, and everyday math.
134 formulas10 subjectsExamples + variables
AllAlgebra 16Arithmetic 8Calculus 15Everyday Math & Conversions 7Finance & Business 9Geometry 28Number Theory & Sequences 8Science & Engineering 16Statistics & Probability 16Trigonometry 11
12 matching formulas
Geometry
Rectangle Area
A = lw
Area enclosed by a rectangle.
Open formula →GeometrySquare Area
A = s²
Area of a square.
Open formula →GeometryTriangle Area
A = ½bh
Area of a triangle.
Open formula →GeometryHeron’s Formula
A = √(s(s−a)(s−b)(s−c))
Area of a triangle from three side lengths.
Open formula →GeometryCircle Area
A = πr²
Area enclosed by a circle.
Open formula →GeometrySector Area
A = ½r²θ
Area of a circular sector.
Open formula →GeometryTrapezoid Area
A = ½(a+b)h
Area of a trapezoid.
Open formula →GeometryParallelogram Area
A = bh
Area of a parallelogram.
Open formula →GeometryRhombus Area
A = ½d₁d₂
Area of a rhombus from diagonals.
Open formula →GeometryEllipse Area
A = πab
Area enclosed by an ellipse.
Open formula →GeometrySphere Surface Area
S = 4πr²
Surface area of a sphere.
Open formula →Science & EngineeringPressure
P = F/A
Force distributed over area.
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