CALCULATOR DIRECTORY
Math
Geometry
135
- 2D Cartesian Point Distance
- 2D Rotation about Origin Component
- 30 60 90 Triangle Long Leg from Short Leg
- 3D Cartesian Point Distance
- 45 45 90 Triangle Hypotenuse from Equal Leg
- Arc Length
- Area of a Circle
- Area of a Right Triangle
- Base of a Triangle
- Chord Length
- Circle Area
- Circle Circumference
- Circle Equation Residual at a Point
- Circle Radius from Diameter Endpoints
- Circle Tangent Length from Radius and External Clearance
- Circumference of a Cylinder
- Circumference to Diameter
- Closed Hemisphere Total Surface Area
- Closed Right Circular Cylinder Surface Area
- Closed Right Circular Frustum Total Area
- Closed Right Triangular Prism Total Area from Perpendicular Triangle Legs
- Complementary Angles
- Continuous 12-Hour Clock Minor Hand Angle
- Cube Space Diagonal from Side
- Cube Volume
- Cylinder Volume
- Diagonal of a Square
- Diameter of a Circle
- Diameter to Radius
- Ellipse Area
- Ellipse Center to Focus Distance from Minor Semiaxis and Axis Gap
- Ellipse Full Latus Rectum from Minor Semiaxis and Axis Gap
- Ellipsoid Volume
- Equilateral Triangle Area
- Exterior Angles of a Triangle
- General Circle Constant from Center and Radius
- General Circle Radius with Negative Constant
- Golden Ratio Longer Segment
- Golden Rectangle Long Side from Short Side
- Height of a Square Pyramid
- Heron Triangle Area from Three Positive Semiperimeter Gaps
- Hollow Cylinder Material Volume from Inner Radius and Wall
- Hypotenuse
- Ideal Catenary Height Above Lowest Point
- Inscribed Angle
- Inscribed Square Area from Circle Radius
- Isosceles Trapezoid Area from Short Base, Base Gap and Leg Clearance
- Isosceles Triangle Area from Half Base and Leg Clearance
- Isosceles Triangle Base Angle from Apex Angle
- Isosceles Triangle Height from Half Base and Leg Clearance
- Kite Area
- Linear Feet to Square Feet
- Midsegment of a Trapezoid
- Midsegment of a Triangle
- Minor Central Angle from Arc and Radius
- Minor Circular Segment Area from Radius and Central Angle
- Parallelepiped Volume from Base Edges, Included Angle and Perpendicular Height
- Parallelogram Area
- Parallelogram Perimeter
- Perimeter of a Rectangle with Given Area
- Perimeter of a Right Triangle
- Perimeter of a Sector
- Pyramid Volume
- Quarter Circle Area
- Quarter Circle Perimeter
- Radius of a Sphere
- Rectangle Area in ft²
- Rectangle Area in in²
- Rectangle Area in m²
- Rectangle Area in yd²
- Rectangle Diagonal Angle Above Width Axis
- Rectangle Perimeter
- Rectangular Prism Surface Area
- Rectangular Prism Surface Area to Volume Ratio
- Rectangular Pyramid Volume
- Regular Decagon Area
- Regular Dodecagon Area
- Regular Heptagon Area
- Regular Hexagon Area
- Regular Hexagonal Pyramid Volume
- Regular Octagon Area
- Regular Pentagon Area
- Regular Polygon Area from Side and Side Count
- Regular Right Hexagonal Pyramid Total Surface Area
- Regular Tetrahedron Volume
- Rhombus Area
- Right Circular Cone Lateral Area
- Right Circular Cone Slant Height
- Right Circular Cone Total Surface Area
- Right Circular Cone Volume
- Right Circular Cylinder Lateral Area
- Right Circular Diameter of a Cone
- Right Circular Diameter of a Cylinder
- Right Circular Height of a Cone
- Right Circular Height of a Cylinder
- Right Circular Radius of a Cone
- Right Circular Radius of a Cylinder
- Right Isosceles Trapezoidal Prism Lateral Area
- Right Total Surface Area of a Rectangular Pyramid
- Right Total Surface Area of a Square Pyramid
- Ring Torus Surface Area
- Ring Torus Volume
- Sector Area
- Semicircle Area
- Simple Polygon Interior Angle Sum
- Sphere Equation Residual at a Point
- Sphere Surface Area
- Sphere Volume
- Spherical Polar Angle from Positive-z Cartesian Point
- Square Area
- Square Feet of a Triangle
- Square Feet to Cubic Feet
- Square Feet to Cubic Yards
- Square Inches of a Circle
- Square Inches of a Circle
- Square Perimeter
- Square Pyramid Volume
- Supplementary Angles
- Surface Area of a Cube
- Trapezoid Area
- Trapezoid Height
- Trapezoid Perimeter
- Triangle Area
- Triangle Area from Two Sides and Included Angle
- Triangle Height
- Triangle Opposite Side from Two Sides and Included Angle
- Triangle Perimeter from Three Positive Side Gaps
- Triangle Sum Theorem
- Triangular Pyramid Volume
- Truncated Cone Volume
- Uniform Rope Lift Around an Ideal Circle
- Volume of a Hemisphere
- Volume of a Rectangular Prism
- Volume of a Trapezoidal Prism
- Volume of a Triangular Prism
Number scales
8
Percentages & ratios
15
Statistics
45
- Arithmetic Mean of Three Values
- Binary Count Table Accuracy
- Binary Count Table False Positive Rate
- Binary Count Table True Negative Rate
- Binary Count Table True Positive Rate
- Binary Count Table Youden Index
- Bounded Alphabet Fixed Six Slot Count
- Equal-Weight Mean of Two Percentages
- Five Positive Whole Values Population Cv
- Five Star Supplied Count Average
- Five Whole Values Exclusive First Quartile
- Five Whole Values Exclusive Iqr
- Five Whole Values Exclusive Third Quartile
- Five Whole Values Half Open Bin Count
- Five Whole Values Mean Absolute Deviation
- Five Whole Values Midrange
- Five Whole Values Population Variance
- Five Whole Values Range
- Five Whole Values Strict Below Percentile Rank
- Five Whole Values Sum Of Squares
- Geometric Mean of Three Positive Values
- Harmonic Mean of Three Positive Values
- Root Mean Square of Three Values
- Supplied Continuous Uniform Density
- Supplied Count Ordered Triples
- Supplied Count Pie Sector Degrees
- Supplied Count Relative Frequency
- Supplied Count Unordered Triples
- Supplied Interval Absolute Half Width
- Supplied Observed Minus Predicted Residual
- Supplied Quarter Z Raw Score
- Supplied Whole Range Ceiling Class Width
- Supplied Whole Value Z Score
- Three Category Supplied Count Gini Simpson
- Three Category Supplied Count Iqv
- Three Outcome Supplied Count Expected Value
- Three Pairs Intercept Regression Prediction
- Three Pairs Intercept Regression R Squared
- Three Pairs Mean Squared Error
- Three Pairs Pearson Correlation
- Three Pairs Population Covariance
- Three Whole Values Median Absolute Deviation
- Three Whole Values Unique Mode
- Understand your numbers
- Weighted Mean of Two Values
Arithmetic & number operations
18
Explore Arithmetic & number operations →
- Absolute Change
- Absolute Value
- Add Two Numbers
- AND of Two Bits
- Ceiling Function
- Divide by a Positive Number
- Floor Function
- Floor Quotient with Positive Divisor
- Multiply Two Numbers
- NOR of Two Bits
- OR of Two Bits
- Round to Selected Decimal Places, Ties toward +∞
- Round to the Nearest Hundred Calculator (Ties Up)
- Round to the Nearest Integer Calculator (Ties Up)
- Round to the Nearest Ten Calculator (Ties Up)
- Round to the Nearest Thousand Calculator (Ties Up)
- Subtract Two Numbers
- XOR of Two Bits
Fractions & mixed numbers
7
Algebra & equations
20
- Completed-Square Constant for a x²+b x+c
- Complex Conjugate Component
- Complex Principal Phase with Positive Real Part
- Complex Product Component
- Complex Quotient Component, Positive Divisor Real Part
- Continuous Exponential Decay from Supplied Rate and Time
- Continuous Exponential Growth from Supplied Rate and Time
- Continuous Growth Doubling Time from Supplied Positive Rate
- Cubic Polynomial Value at x
- Direct Variation Calculator from a Supplied Constant
- Intersection x of Two Lines with Separated Slopes
- Inverse Variation Calculator from a Supplied Constant
- Logistic Sigmoid of a Real Number
- Negative Input Floor Remainder with Power-of-Two Modulus
- Positive Root of a x²+b x−q=0
- Product of Two Linear Binomials Coefficient
- Quadratic Discriminant from Coefficients
- Quadratic Vertex X Coordinate from Coefficients
- Square of a Two-Term Binomial Value
- Sum of Two Quadratics Coefficient
Powers, roots & logarithms
24
Explore Powers, roots & logarithms →
- Cube Root
- e Calculator | eˣ | e Raised to Power of x
- Fifth Root
- Fourth Root
- Log Base 2
- Log Calculator (Logarithm)
- Logarithm in a Supplied Base Greater Than One
- Math Power
- Natural Log
- Natural Log Quotient as Difference of Logs
- Negative Exponents
- Negative Natural Log of a Positive Number
- Negative Real Square Root Imaginary Coefficient
- Power of 10
- Power of 2
- Power of a Positive Power
- Powers of i Real Coefficient
- Product of Two Nonnegative Square Roots
- Product of Two Powers with the Same Positive Base
- Quotient of Nonnegative Square Roots
- Quotient of Two Powers with the Same Positive Base
- Reciprocal
- Square Root
- Sum of Two Natural Logs as Log of a Product
Sequences & series
8
Coordinates, lines & slopes
19
Explore Coordinates, lines & slopes →
- 2D Cartesian Midpoint Coordinate
- Area of Triangle with Coordinates
- Average Rate of Change
- Axis-Aligned Ellipse Center Coordinate
- Axis-Aligned Ellipse Point Residual
- Circle Center Coordinate from D and E
- Internal Directed Segment Coordinate from Positive Ratio
- Line X Intercept from Y Intercept and Positive Slope
- Line Y Coordinate from Point, Slope and X
- Line Y Intercept from a Point and Slope
- Manhattan Distance
- Missing Cartesian Endpoint Coordinate from Midpoint and Known Endpoint
- Perpendicular Line Y Coordinate Through a Supplied Point
- Point to Plane Distance with Positive C Normal Component
- Polar to Cartesian Coordinate
- Slope Percentage
- Standard Form Line Y Coordinate
- Triangle Centroid Coordinate from Three Cartesian Vertices
- Triangle Perimeter from Three Cartesian Vertices
Angles & trigonometry
25
Explore Angles & trigonometry →
- Arccos Calculator (Inverse Cosine)
- Arcsin Calculator (Inverse Sine)
- Arctan Calculator (Inverse Tangent)
- Circumcenter y for Triangle (0,0),(b,0),(u,v)
- Cosecant of an Acute Angle
- Cosh
- Cosine
- Cosine of Twice an Angle
- Cotangent of an Acute Angle
- Orthocenter y for Triangle (0,0),(b,0),(u,v)
- Principal Coterminal Angle in [0,360)
- Reference Angle from Real Degrees
- Right Triangle Acute Angle from Opposite and Adjacent Legs
- Right Triangle Tangent Ratio from Legs
- Secant of an Acute Angle
- Sine
- Sine of Half a Positive Angle
- Sine of Sum of Two Angles
- Sine of Twice an Angle
- Sine Squared via Power Reduction
- Sinh
- Tangent
- Tangent of Double Angle, |θ|≤44°
- Tanh
- Triangle Side from Known Side and Opposite Angles
Matrices, vectors & linear algebra
29
Explore Matrices, vectors & linear algebra →
- 2 by 2 Matrix Determinant
- 2 by 2 Matrix Frobenius Norm
- 2 by 2 Matrix Trace
- 2×2 Adjugate Entry
- 2×2 Characteristic Polynomial at Lambda
- 2×2 Cofactor Entry
- 2×2 Hadamard Product Entry
- 2×2 Matrix Product Entry
- 2×2 Matrix Scalar Product Entry
- 2×2 Matrix Square Entry
- 2×2 Matrix Sum Entry
- 2×2 Matrix Transpose Entry
- 2D Cosine Similarity of Two Nonzero Vectors
- 2D Linear Combination Component
- 2D Unit Vector Component with Positive X Component
- 2D Vector Difference Component
- 2D Vector Direction with Positive X Component
- 2D Vector Projection Component onto Positive X Direction Vector
- 2D Vector Sum Component
- 3D Cross Product Magnitude
- Diagonal 2×2 Largest Eigenvalue
- Diagonal 2×2 Null Space Dimension
- Diagonal 2×2 Rank
- Diagonal 3×3 Largest Singular Value
- Dot Product
- Euclidean Vector Norm of Three Components
- Invertible [[a,b],[-b,d]] Matrix Inverse Entry
- Positive Diagonal 2×2 Spectral Condition Number
- Solve x in a x + b y = p, −b x + d y = q
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