Matrix Determinant Calculator
Free online matrix determinant calculator — works for 2×2 and 3×3 matrices, with the cofactor expansion shown for 3×3.
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Free interactive calculators for PUC and Engineering Mathematics.
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Matrix Inverse Calculator
Free online matrix inverse calculator for 2×2 and 3×3 matrices — uses the adjugate method and tells you when a matrix is singular.
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Trig Ratio Calculator
Free online trig ratio calculator — enter any angle in degrees or radians and get sin, cos, tan, cosec, sec and cot instantly.
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Degrees To Radians Converter Calculator
Convert degrees to radians or radians to degrees instantly, with the exact fraction of π shown alongside the decimal value.
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Set Operations Calculator
Free online set operations calculator — enter two sets and instantly get their union, intersection and difference.
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Permutation Combination Calculator
Free online nPr and nCr calculator — enter n and r and get permutations, combinations and factorials instantly, with the working shown.
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Ap Gp Calculator
Free online AP and GP calculator — enter the first term, common difference or ratio, and instantly get the nth term and the sum of n terms.
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Binomial Expansion Calculator
Free online binomial expansion calculator — enter n and instantly expand (x + y)ⁿ with every term and coefficient shown.
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Slope Line Equation Calculator
Free online slope and line equation calculator — enter two points and instantly get the slope, plus the line’s equation in slope-intercept form.
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Circle Equation Calculator
Free online circle equation calculator — enter the centre and radius to get the standard equation, or enter the general equation to find the centre and radius.