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📐 Math & Algebra

Math & Algebra Calculators

Free math calculators — percentage, scientific, fraction, quadratic, GPA and more. Instant results, no signup.

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Percentage Calculator
Find X% of a number, percentage change, or ratio
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Scientific Calculator
Full scientific calculator with trig, log, factorial
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Fraction Calculator
Add, subtract, multiply and divide fractions
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Quadratic Equation Solver
Solve ax²+bx+c=0 with step-by-step working
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GPA Calculator
Weighted GPA calculator on a 4.0 scale
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Grade Calculator
Weighted final grade from assignments and tests