📐 Math Calculators
Math calculators covering percentage, scientific computation, fractions, permutations, GPA, standard deviation, and more. All free to use, no registration required, instant results.
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Percentage Calculator
Calculate percentage increase, decrease, and proportion
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Scientific Calculator
Trigonometric, logarithmic, and exponential calculations
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Fraction Calculator
Add, subtract, multiply, and divide fractions
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Ratio Calculator
Scale ratios and recipe proportions
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Geometry Calculator
Calculate area, perimeter, and volume of shapes
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Random Number Generator
Generate random numbers within a specified range
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Password Generator
Generate secure random passwords
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Number Base Converter
Convert between binary, octal, decimal, and hexadecimal
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Circle Calculator
Calculate radius, diameter, circumference, and area
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GPA Calculator
Calculate grade point average, supports 4.0/5.0 scales
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Grade Calculator
Calculate final grades and weighted averages
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Standard Deviation Calculator
Calculate population/sample standard deviation, variance, and mean
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Combination Calculator
Calculate combinations C(n,r)
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Permutation Calculator
Calculate permutations P(n,r)
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Power Calculator
Calculate x^n, supports negative and fractional exponents
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Root Calculator
Calculate square root, cube root, and nth root
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Absolute Value Calculator
Calculate |x| with number line visualization
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Logarithm Calculator
Calculate lg, ln, and log with custom base
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Trigonometry Calculator
Calculate sin, cos, tan in degrees and radians
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Prime Number Checker
Check primes, factorize, and find nearby primes
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GCD & LCM Calculator
Calculate greatest common divisor and least common multiple
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Factorial Calculator
Calculate n!, supports 0-170
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Quadratic Equation Solver
Solve ax²+bx+c=0, calculate discriminant and roots
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Pythagorean Theorem Calculator
Calculate the third side of a right triangle
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Ohm's Law Calculator
Calculate voltage, current, resistance, and power
Math Calculator Guide
CalcPlus math tools provide essential calculation functions:
% Percentage Calculator: Calculate percentage increase, decrease, and proportion — e.g., "What is 15% of 200?" or "How much did 300 increase from 200?"
🔢 Scientific Calculator: Trigonometric, logarithmic, exponential, and factorial functions for study and work.
½ Fraction Calculator: Add, subtract, multiply, and divide fractions with automatic simplification.
🧮 Permutation & Combination: Calculate P(n,r) and C(n,r) for probability and statistics problems.
📊 Standard Deviation: Calculate population/sample standard deviation, variance, and mean with batch data input.
🎓 GPA Calculator: Calculate grade point average, supports 4.0 and 5.0 scales.