Math

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Scientific Calculator

A full-featured scientific calculator with trigonometry, logarithms, exponents, roots, factorials...

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Quadratic Calculator

Solve quadratic equations (ax² + bx + c = 0) instantly. Find real and complex roots, discriminan...

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Fractions Calculator

Add, subtract, multiply, and divide fractions with ease. Simplify fractions, convert to decimals ...

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Ratio Calculator

Calculate, simplify, and solve ratios and proportions. Find equivalent ratios, convert to fractio...

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payments

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Percentage Calculator

Use our free percentage calculator to calculate percent of a number, percentage increase, decreas...

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Derivative Calculator

Calculate derivatives of any function with step-by-step solutions. Supports polynomials, trigonom...

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Time Calculator

Add, subtract, or find the difference between times in hours, minutes, and seconds. Supports HH:M...

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Probability Calculator

Calculate probabilities for any scenario with step-by-step solutions. Supports basic, conditional...

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Matrix Calculator

Perform all matrix operations with step-by-step solutions. Add, subtract, multiply matrices, find...

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Circle Calculator

Free circle calculator — enter any one value (radius, diameter, circumference, or area) and ins...

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Complex Number Calculator

Perform all complex number operations with step-by-step solutions. Add, subtract, multiply, divid...

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Perimeter Calculator

Calculate the perimeter of any shape including rectangle, square, triangle, circle, parallelogram...

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Mixed Number Calculator

Calculate with mixed numbers instantly. Add, subtract, multiply, and divide mixed fractions with ...

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school

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SAT Score Calculator

Estimate your Digital SAT total score (400-1600), section scores, and percentile from raw correct...

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Scientific Notation

Convert between decimal, scientific notation (m × 10^n), engineering notation, and E-notation. C...

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