Matrix Calculator is a free online tool that can perform various operations on matrices, such as finding the determinant, inverse, transpose, rank, power, sum, multiplication, and decomposition of matrices.

Ratio Calculator is a free online tool that helps you to find the ratio of two or more numbers, simplify a ratio to its lowest terms, convert a ratio to a fraction, find equivalent ratios, and solve ratio word problems. Ratio Calculator can also help you to calculate the proportion of two quantities, the aspect ratio of a shape or an image, the cross multiplication of two fractions, and the golden ratio of a line segment.