Circle Calculator
Dark mode Quick answer A circle calculator finds the radius, diameter, circumference and area from any one of them. Enter what you know and pick which value it is. A circle with radius 5 has …
Shakeel Muzaffar
Triangle Area Calculator
Dark mode Quick answer A triangle area calculator finds the area from a base and height, from three sides, or from two sides and the angle between them. The simplest is half the base times …
Percent Error Calculator
Dark mode Quick answer A percent error calculator shows how far a measured value is from the true value, as a percentage. Subtract the accepted value from the measured one, divide by the accepted value, …
Combination and Permutation Calculator
Dark mode Quick answer A combination and permutation calculator counts how many ways you can choose r items from n. Combinations ignore order, permutations count it. Choosing 2 from 5 gives 10 combinations but 20 …
Cross Product Calculator
Dark mode Quick answer A cross product calculator multiplies two 3D vectors to give a third vector at right angles to both. Enter three components for each vector. The cross product of 1, 0, 0 …
Dot Product Calculator
Dark mode Quick answer A dot product calculator multiplies two vectors term by term and adds the results to a single number. Enter the components of each vector. The dot product of 1, 2, 3 …
Inverse Matrix Calculator
Dark mode Quick answer An inverse matrix calculator finds the matrix that undoes another, so their product is the identity. Enter a 2×2 or 3×3 matrix row by row. Only a matrix with a nonzero …
Matrix Addition Calculator
Dark mode Quick answer A matrix addition calculator adds or subtracts two matrices of the same size by combining matching entries. Enter both matrices row by row and choose add or subtract. Adding a matrix …
Matrix Multiplication Calculator
Dark mode Quick answer A matrix multiplication calculator multiplies two square matrices using the row-by-column rule, where each entry is a row of the first matrix dotted with a column of the second. Enter both …
Vector Magnitude Calculator
Dark mode Quick answer A vector magnitude calculator finds the length of a vector as the square root of the sum of its squared components. Enter the components, separated by commas. The vector with components …