Math calculators
521 calculators in 18 groups. Each one shows its formula, a worked example and its sources.
2D shapes 46
- Area calculator
- Area of a circle calculator
- Area of a trapezoid calculator
- Area of a quadrilateral calculator
- Chord length calculator
- Circumference calculator
- Crescent area calculator
- Cross-sectional area calculator
- Cycloid calculator
- Decagon calculator
- Diagonal of a rectangle calculator
- Dimensions of a rectangle calculator
- Dodecagon calculator
- Ellipse calculator
- Ellipse circumference calculator
- Golden rectangle calculator
- Heptagon calculator
- Heptagon area calculator
- Hexagon calculator
- Isosceles trapezoid calculator
- Kite area calculator
- Möbius strip calculator
- Moment of inertia calculator
- Octagon calculator
- Parallelogram area calculator
- Parallelogram perimeter calculator
- Pentagon calculator
- Perimeter calculator
- Quadrilateral calculator
- Rectangle calculator
- Rectangle scale factor calculator
- Polygon calculator
- Area of a regular polygon calculator
- Rhombus area calculator
- Right trapezoid calculator
- Segment area calculator
- Spiral length calculator
- Square calculator
- Square area calculator
- Star shape calculator
- Trapezoid calculator
- Trapezoid angle calculator
- Trapezoid height calculator
- Midsegment of a trapezoid calculator
- Trapezoid perimeter calculator
- Trapezoid side calculator
3D shapes 51
- Surface area of a hemisphere calculator
- Area of a sphere calculator
- Surface area of a cone calculator
- Cone volume calculator
- Cube calculator
- Cuboid surface area calculator
- Cylinder volume calculator
- Cylinder volume in gallons calculator
- Diameter of a cone calculator
- Ellipsoid volume calculator
- Euler's formula for polyhedra calculator
- Area of a frustum of a cone calculator
- Great circle calculator
- Height of a square pyramid calculator
- Height of a cylinder calculator
- Hexagonal pyramid calculator
- Hexagonal pyramid surface area calculator
- Hollow cylinder volume calculator
- Lateral area of a cone calculator
- Lateral area of a trapezoidal prism calculator
- Lateral surface area of a cylinder calculator
- Pyramid angle calculator
- Pyramid volume calculator
- Radius of a cylinder calculator
- Radius of a sphere calculator
- Rectangular prism calculator
- Right circular cone calculator
- Right cylinder calculator
- Right rectangular pyramid calculator
- Right square pyramid calculator
- Slant height calculator
- Slant height of a cone calculator
- Sphere calculator
- Sphere volume calculator
- Square pyramid calculator
- Surface area calculator
- Surface area of a triangular prism calculator
- Surface area of a square pyramid calculator
- Surface area to volume ratio calculator
- Tetrahedron volume calculator
- Torus surface area calculator
- Torus volume calculator
- Volume of a trapezoidal prism calculator
- Triangular prism calculator
- Triangular pyramid volume calculator
- Truncated cone calculator
- Truncated cone volume calculator
- Volume calculator
- Hexagonal pyramid volume calculator
- Volume of a triangular prism calculator
- Volume of a hemisphere calculator
Algebra 52
- Absolute value equation calculator
- Absolute value inequalities calculator
- Adding and subtracting polynomials calculator
- Bessel function calculator
- Binomial coefficient calculator
- Box method calculator
- Completing the square calculator
- Completing the square practice calculator
- Complex number calculator
- Complex number to polar form calculator
- Complex number to rectangular form calculator
- Complex number to trigonometric form calculator
- Complex root calculator
- Complex conjugate calculator
- Cubic equation calculator
- Descartes' rule of signs calculator
- Diamond problem calculator
- Direct variation calculator
- Polynomial discriminant calculator
- Divide complex numbers calculator
- Elimination method calculator
- Error function calculator
- Factoring trinomials calculator
- FOIL calculator
- Gamma function calculator
- Generic rectangle calculator
- Number line inequality calculator
- Quadratic inequality calculator
- Hyperbolic functions calculator
- Inequality to interval notation calculator
- Integration by completing the square
- Interval notation calculator
- Inverse variation calculator
- Multiply complex numbers calculator
- Multiplying binomials calculator
- Multiplying polynomials calculator
- Partial fraction decomposition calculator
- Perfect square trinomial calculator
- Polynomial division calculator
- Power set calculator
- Quadratic formula calculator
- Quaternion calculator
- Rational zeros calculator
- Reverse FOIL calculator
- Square of a binomial calculator
- Subset calculator
- Substitution method calculator
- Synthetic division calculator
- System of equations calculator
- Tanh calculator
- Truth table generator
- Union and intersection calculator
Angle 9
Arithmetic 26
- Average calculator
- Equivalent ratio calculator
- Modulo order of operations calculator
- Partial products calculator
- Pi experiments calculator
- Place value calculator
- Polish notation calculator
- Proportion calculator
- Quotient and remainder calculator
- Radical calculator
- Ratio calculator
- Ratio of 3 numbers calculator
- Remainder calculator
- Root mean square calculator
- Round to the nearest cent calculator
- Round to the nearest hundred calculator
- Round to the nearest ten calculator
- Round to the nearest thousand calculator
- Rounding calculator
- Set builder notation calculator
- Significant figures calculator
- Simplify ratio calculator
- Standard form calculator
- Digit sum calculator
- Sum of products calculator
- Weighted average calculator
Arithmetic calculators 38
- Absolute change calculator
- Absolute value calculator
- Adding and subtracting fractions calculator
- Addition calculator
- Associative property calculator
- Ceiling function calculator
- Chinese remainder theorem calculator
- Compatible numbers calculator
- Consecutive integers calculator
- Cross multiplication calculator
- Cube root calculator
- Decimal calculator
- Digital root calculator
- Distributive property calculator
- Divisibility test calculator
- Egyptian fractions calculator
- Expanded form calculator
- Factor calculator
- Factorial calculator
- Fermat's little theorem calculator
- Floor division calculator
- Floor function calculator
- Fundamental counting principle calculator
- Geometric mean calculator
- Greater than or less than calculator
- Harmonic mean calculator
- Integer calculator
- Inverse modulo calculator
- Long addition calculator
- Division calculator
- Long multiplication calculator
- Long subtraction calculator
- Magic square calculator
- Mean calculator
- Modulo calculator
- Multiplication calculator
- Multiplicative inverse calculator
- Order of magnitude calculator
Binary calculators 10 14
- AND calculator
- Binary addition calculator
- Binary division calculator
- Binary fraction converter
- Binary multiplication calculator
- Binary calculator
- Binary subtraction calculator
- Bit shift calculator
- Bitwise calculator
- NOR calculator
- One's complement calculator
- OR calculator
- Two's complement calculator
- XOR calculator
Circle calculators 14
- Arc length calculator
- Circle calculator
- Centre of a circle calculator
- Equation of a circle calculator
- Circle theorems calculator
- Circumference to radius calculator
- Coin rotation paradox calculator
- Perimeter of a sector calculator
- Quarter circle calculator
- Sector area calculator
- Semicircle area calculator
- Square in a circle calculator
- String girdling Earth calculator
- Tangent of a circle calculator
Coordinate geometry 62
- Three-dimensional distance calculator
- Area of a triangle with coordinates calculator
- Average rate of change calculator
- Bilinear interpolation calculator
- Polar coordinates calculator
- Catenary curve calculator
- Centre of an ellipse calculator
- Center of mass calculator
- Centroid calculator
- Centroid of a triangle calculator
- Circumcentre of a triangle calculator
- Conic sections calculator
- Coordinate grid calculator
- Cosine similarity calculator
- Cross product calculator
- Cylindrical coordinates calculator
- Distance calculator
- Distance between two points calculator
- Distance from point to plane calculator
- Dot product and projection calculator
- Ellipse standard form calculator
- Endpoint calculator
- Circle equation from diameter endpoints calculator
- Equation of a plane calculator
- Euclidean distance calculator
- Gradient calculator
- Intersection of two lines calculator
- Irregular polygon area calculator
- Latus rectum endpoints calculator
- Least squares regression line calculator
- Line equation from two points calculator
- Intersection line of two planes calculator
- Linear interpolation calculator
- Manhattan distance calculator
- Midpoint calculator
- Orthocenter calculator
- Parabola equation and focus calculator
- Parallel line calculator
- Perpendicular line calculator
- Point-slope form calculator
- Polynomial values for graphing calculator
- Directed segment ratio and endpoint calculator
- Rise over run calculator
- Point rotation calculator
- Scatter plot data calculator
- Segment addition postulate calculator
- Sigmoid and inverse sigmoid calculator
- Slope calculator
- Slope-intercept form calculator
- Equation of a sphere calculator
- Spherical coordinates calculator
- Standard form to slope-intercept form calculator
- Bearing triangulation calculator
- Unit vector calculator
- Vector calculator
- Vector addition and subtraction calculator
- Vector direction calculator
- Vector magnitude calculator
- Vector projection calculator
- Vertex form calculator
- Volume of a parallelepiped calculator
- Y-intercept calculator
Exponents and logarithms 33
- Antilog calculator
- Change of base formula calculator
- Condense logarithms calculator
- Dividing exponents calculator
- Dividing radicals calculator
- e power x calculator
- Engineering notation calculator
- Expanding logarithms calculator
- Exponent calculator
- Exponential form calculator
- Exponential function calculator
- Exponential growth calculator
- Fifth root calculator
- Fourth root calculator
- Logarithm calculator
- Log base 2 calculator
- Math power calculator
- Multiplying exponents calculator
- Multiplying radicals calculator
- Multiplying scientific notation calculator
- Natural log calculator
- Negative exponents calculator
- Negative log calculator
- Power of 10 calculator
- Power of 2 calculator
- Power of a power calculator
- Powers of i calculator
- Root calculator
- Scientific notation calculator
- Scientific notation converter
- Simplify cube root calculator
- Simplifying radicals calculator
- Square root calculator
Fractions 20
- Adding fractions calculator
- Comparing fractions calculator
- Decimal to fraction calculator
- Dividing fractions calculator
- Equivalent fractions calculator
- Fraction calculator
- Fraction to decimal calculator
- Fractional exponent calculator
- Golden ratio calculator
- Improper fraction to mixed number calculator
- Least common denominator calculator
- Least to greatest fractions calculator
- Mixed number calculator
- Mixed number to improper fraction calculator
- Multiplying fractions calculator
- Rationalize the denominator calculator
- Reciprocal calculator
- Simplify fractions calculator
- Terminating decimals calculator
- Unit rate calculator
Linear algebra 36
- Adjoint matrix calculator
- Characteristic polynomial calculator
- Cholesky decomposition calculator
- Cofactor expansion calculator
- Cofactor matrix calculator
- Column space calculator
- Condition number calculator
- Corner point calculator
- Cramer's rule calculator
- Matrix determinant calculator
- Diagonalize matrix calculator
- Eigenvalue and eigenvector calculator
- Gauss-Jordan elimination calculator
- Gram-Schmidt calculator
- Hadamard product calculator
- Linear combination calculator
- Linear independence calculator
- LU decomposition calculator
- Matrix calculator
- Matrix addition and subtraction calculator
- Matrix by scalar calculator
- Inverse matrix calculator
- Matrix multiplication calculator
- Matrix norm calculator
- Matrix power calculator
- Matrix rank calculator
- Matrix trace calculator
- Matrix transpose calculator
- Null space calculator
- Polar decomposition calculator
- Pseudoinverse calculator
- QR decomposition calculator
- Row echelon form calculator
- Singular values calculator
- SVD calculator
- Tensor product calculator
Number theory 18
- Common factor calculator
- Common multiple calculator
- Euclidean algorithm calculator
- GCD calculator
- Greatest common factor calculator
- Is modulo associative?
- Least common multiple calculator
- Least common factor calculator
- Least common multiple calculator
- Perfect cube calculator
- Perfect square calculator
- Power modulo calculator
- Prime factorization calculator
- Prime number calculator
- Rational or irrational calculator
- Relatively prime calculator
- Triangular numbers calculator
- Practical modulo calculator
Other 14
- Babylonian numbers converter
- Cyclomatic complexity calculator
- Galileo's paradox of infinity calculator
- Hilbert's hotel paradox calculator
- Involute function calculator
- Linear feedback shift register calculator
- Luhn algorithm calculator
- Mayan numerals converter
- Miracle probability calculator
- Potato paradox calculator
- Prisoner's dilemma calculator
- Queueing theory calculator
- RSA calculator
- Ugly duckling theorem calculator
Percentages 16
- Average percentage calculator
- Fraction to percent calculator
- Decimal to percent converter
- Doubling time calculator
- Percent error calculator
- Time percentage calculator
- Percent to goal calculator
- Percentage calculator
- Percentage change calculator
- Percentage decrease calculator
- Percentage difference calculator
- Percentage increase calculator
- Percentage of a percentage calculator
- Percentage point calculator
- Relative change calculator
- Slope percentage calculator
Sequences 11
- Arithmetic sequence calculator
- Collatz conjecture calculator
- Convolution calculator
- Fibonacci calculator
- Geometric sequence calculator
- Harmonic number calculator
- Lagrange error bound calculator
- Pascal's triangle calculator
- Sequence calculator
- Sum of a linear number sequence calculator
- Sum of series calculator
Triangles 36
- AAA triangle calculator
- AAS triangle calculator
- Acute triangle calculator
- Area of an oblique triangle calculator
- Area of an obtuse triangle calculator
- SAS triangle area calculator
- ASA triangle calculator
- Base of a triangle calculator
- Right triangle similarity calculator
- Circumscribed circle calculator
- Classifying triangles calculator
- Equilateral triangle calculator
- Exterior angles of a triangle calculator
- Heron’s formula calculator
- Hypotenuse calculator
- Isosceles triangle calculator
- Isosceles triangle find A calculator
- Midsegment of a triangle calculator
- Triangle perimeter with fractions calculator
- Pythagorean theorem calculator
- Pythagorean triples calculator
- Right triangle calculator
- Right triangle area calculator
- Right triangle side and angle calculator
- Similar triangles calculator
- Special right triangles calculator
- 30-60-90 triangle calculator
- 45-45-90 triangle calculator
- Triangle angle calculator
- Triangle area calculator
- Triangle congruence calculator
- Triangle height calculator
- Triangle inequality calculator
- Triangle perimeter calculator
- Triangle proportionality theorem calculator
- Triangle ratio calculator
Trigonometry 25
- Arccos calculator (inverse cosine)
- Arcsin calculator (inverse sine)
- Arctan calculator (inverse tangent)
- Cofunction calculator
- Cosine calculator
- Cos 2 theta calculator
- Cosh calculator
- Cotangent calculator
- Cosecant calculator
- Double angle formula calculator
- Exact value of trig functions calculator
- Half angle calculator
- Inverse trigonometric functions calculator
- Law of cosines calculator
- Law of sines calculator
- Phase shift calculator
- Power reducing calculator
- Secant calculator
- Sine calculator
- Sum and difference identities calculator
- Tangent calculator
- Trig identities calculator
- Trigonometric functions calculator
- Trigonometry calculator
- Unit circle calculator