Math Calculators
Free online calculators for basic arithmetic, percentages, fractions, and more.
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Basic Calculator
Add, subtract, multiply, divide
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Percentage Calculator
Find percentages, increases, decreases
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Fraction Calculator
Add, subtract, multiply fractions
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Square Root Calculator
Calculate square and cube roots
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Scientific Calculator
Trigonometry, logarithms, exponents
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Prime Number Checker
Check if a number is prime
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GPA Calculator
Calculate your GPA with support for US 4.0, Korean 4.5, Japanese, and percentage grading systems
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Discount Calculator
Calculate the final price and savings after applying a discount.
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Password Strength Checker
Analyze your password strength and see estimated time to crack.