Mathematics
Mathematical rules and laws - numbers, areas, volumes, exponents, trigonometric functions and more
Algebraic Expressions and Formulas
Principal algebraic expressions and formulas
Angle Calculator and Carpenter's Square
Calculate angles with a straight board across a carpenter's square
Angle Converter
Converting between units of angle.
Area of Intersecting Circles
Calculate area of intersecting circles
Area Survey App
Online app making an exact plot of a surveyed area - like a room, a property or any 2D shape.
ASCII Codes
ASCII codes and characters
Binary Adding, Subtraction, Multiplicaton and Division
Adding, subtracting, multiplying and dividing binary numbers
Binary to Decimal, Hexadecimal and ASCII Converter
Convert between binary, decimal and hexadecimal numbers
Binary, Octal and Hexadecimal Numbers
Decimal, binary, octal and hexadecimal numbers
Binomial Theorem
Binomial theorem for positive integers
Boolean Algebra
Summary of primitive logic functions
Center of Gravity
Bodies and their center of gravity
Centroids of Plane Areas
Square, rectangle, cirle. semi-circle and right-angled triangle
Chord Lengths when Dividing a Circle in to Equal Segments
Calculate chord lengths when dividing the circumference of a circle into equal number of segments
Circle - Equation
The equation for a circle
Circles and Squares - Equal Areas
Radius and side lengths of equal areas, circles and squares
Circles on the Outside of a Circle
The numbers of circles on the outside of an inner circle or the geometry of rollers on a shaft
Circles within a Rectangle
The maximum number of circles possible within a rectangle - ex. numbers of pipes or wires in a conduit
Complex Numbers
Complex numbers are used in alternating current theory and in mechanical vector analysis
Content of Horizontal - or Sloped - Cylindrical Tank and Pipe
Volume of partly filled horizontal or sloped cylindrical tanks and pipes - an online calculator
Convert between Polar and Cartesian Coordinates
Cartesian and Polar coordinate converting
Data Types
Signed and unsigned datatypes
Decimal System Prefixes
Prefix names of units multiples and submultiples.
Differential Calculus
Derivatives and differentiation
Discrete Data Sets - Mean, Median and Mode Values
Calculate arithmetic mean, median and modal values from discrete data sets
Distance between Two 3D Points
Distance between two points in a three dimension coordinate system - online calculator
Elementary Curves
Ellipse, circle, hyperbola, parabola, parallel and intersecting and coincident lines
Elementary Surfaces
Ellipsoid, sphere, hyperboloid, cone and more
Exponents - Powers and Roots
The laws of fractional and integer exponents.
Factorials
The product of all positive integers
Fractions
Law of fractions
Fractions and Decimal Inches Equivalents
The inches fractional and decimal equivalents.
Geometric Shapes - Areas
Areas, diagonals and more - of geometric figures like rectangles, triangles, trapezoids ..
Hexagons and Squares - Diagonal Lengths
Distance between corners for hexagons and squares
Hyperbolic Functions
Exponential functions related to the hyperbola
Law of Cosines
One side of a triangle when opposite angle and two sides are known
Law of Sines
Angles in a generic triangle
Law of Tangents
Triangles and law of tangents
Laws of Indices
Simplifying calculations by involving indices
Length of Spiral
Calculate the length of a spiral or the length of material contained in a roll
Logarithms
The rules of logarithms - log10 and loge for numbers ranging 1 to 1000.
Minutes to Degrees Converting Chart
Convert from minutes to degrees
Numbers - Square, Cube, Square Root and Cubic Root Calculator
Calculate square, cube, square root and cubic root. Values tabulated for numbers ranging 1 to 100.
Numbers - Standard Form, Scientific and Engineering Notation
Writing numbers
Oblique Triangle
Oblique triangle equations
Optical Distance Law
Geometric dilution of light vs. distance.
Percentage
Working with relative values.
Pipe Fractional Equivalents
Comparing pipe fractions and decimal inches
Prime Numbers
Numbers up to 1000
Pythagorean Theorem
The pythagorean theorem used for squaring
Radians vs. Degrees
Radian is the SI unit of angle. Convert between degrees and radians. Calculate angular velocity.
Ratios and Proportions
The relative values between quantities - ratios and proportions.
Regular Polygons
Area of regular polygons
Right Angled Triangle
Right angled triangle equations
Scientific Calculator
Online scientific calculator
Smaller Circles within a Larger Circle
Estimate the number of small circles that fits into an outer larger circle - ex. how many pipes or wires fits in a larger pipe or conduit
Smaller Rectangles within a Larger Rectangle
The maximum number of smaller rectangles - or squares - within a larger rectangle (or square)
Solids - Volumes and Surfaces
The volume and surface of solids like rectangular prism, cylinders, pyramids, cones and spheres - online calculator.
Squares, Cubes and Roots
Numbers - squares, cubes, square roots and cube roots
Squaring with Diagonal Measurements
A rectangle is square if the length of both diagonals are equal
Standard Differentials and Integrals
Differentials and integrals
Taylor Series
Function as an infinite sum of terms
Triangle
Triangle analytical geometry
Trigonometric Functions
Sine, Cosine and Tangent - Natural Trigonometric Functions.
Two Equations with Two Unknowns
Online calculator for two equations with two unknowns
Vector Addition
An online vector calculator - add vectors with different magnitude and direction - like forces, velocities and more.
