Mathematics

Q: Do these calculators replace specialized software like R or MATLAB?

No. They cover individual and educational calculations. For large dataset analysis, complex statistical modeling or scientific computing, use dedicated tools such as R, Python/NumPy or MATLAB.

Precise math calculators: number bases, fractions, GCD/LCM, primes, combinatorics, Fibonacci, correlation and regression.

Tools: 28
Updated: July 20, 2026

28 of 28 tools

Number Base ConverterConvert integers between binary, octal, decimal, hexadecimal and custom base (2–36).
Fraction SimplifierSimplify fractions, convert between improper and mixed form and get the exact decimal.
GCD & LCM CalculatorCompute GCD and LCM for multiple integers with step-by-step prime factorization.
Prime Number CheckerCheck if a number is prime and get its prime factorization with detailed steps.
Combination CalculatorCompute C(n,r) with and without repetition, showing the formula and exact result.
Permutation CalculatorCompute P(n,r) with and without repetition, showing formula, steps and exact result.
Fibonacci Sequence GeneratorGenerate the first N Fibonacci terms with support for arbitrarily large values.
Correlation Coefficient CalculatorCompute the Pearson correlation coefficient (r) for x,y data pairs.
Linear Regression CalculatorSimple linear regression with slope, intercept, r², standard error and line equation.
Rule of Three CalculatorSolve direct and inverse rule of three with a step-by-step equation.
Quadratic Equation SolverSolve ax²+bx+c=0 with the quadratic formula, discriminant, and real or complex roots.
Area & Volume CalculatorCompute area and perimeter of 2D shapes and volume of 3D solids with formulas and unit conversion.
Pythagorean Theorem CalculatorEnter any two sides of a right triangle and compute the third using a²+b²=c².
Standard Deviation CalculatorCompute mean, variance and standard deviation (population or sample) from a list of numbers.
Scientific Notation ConverterConvert numbers between standard decimal notation and scientific notation (a×10ⁿ).
Logarithm CalculatorCompute logarithms in any base, log₁₀ and natural logarithm (ln) with step-by-step properties.
Significant Figures CalculatorCount significant figures in a number with an explanation of each rule applied.
Percentage CalculatorNewFind a percentage of a value, what percent one number is of another, increase, discount and percent change with step-by-step.
Mean, Median & Mode CalculatorNewCompute mean, median, mode, range, quartiles and spread from a list of numbers with a histogram.
Fraction CalculatorNewAdd, subtract, multiply and divide fractions with simplified result, mixed number and exact decimal.
Exponent & Root CalculatorNewCompute powers with integer, negative and fractional exponents, and roots of any index, with steps.
Arithmetic & Geometric Sequence CalculatorNewGenerate arithmetic (AP) and geometric (GP) sequences: general term, nth term, sum and the list of terms.
Ratio CalculatorNewSolve proportions A:B = C:X for the unknown term and simplify ratios to lowest terms.
Probability CalculatorNewCompute the probability of an event, plus the union, intersection, conditional and complement of two events.
Triangle CalculatorNewSolve any triangle (SSS, SAS, ASA, SSA) with the law of sines and cosines, area and a drawn figure.
Trigonometry CalculatorNewCompute sine, cosine, tangent and inverses with the unit circle, quadrant and reference angle.
Matrix CalculatorNewAdd, multiply, invert and transpose matrices, compute determinant, rank and reduced row echelon form (RREF).
GPA CalculatorNewCompute your GPA on the US 4.0 scale or Brazil's weighted CR (Coeficiente de Rendimento) grade average.

Math tools focused on precision and explanation

This category brings together calculators for fundamental mathematics and statistics. Each tool prioritizes correctness, visible formula and step-by-step reasoning, useful for students, developers working with numeric representations and professionals who need to verify calculations quickly.

All tools run entirely in the browser. No data is sent to the server. For large-number operations, BigInt and robust algorithms are used to avoid silent overflow.

What is available in this category

Base Converter (binary, octal, decimal, hexadecimal and base 2–36), Fraction Simplifier (irreducible form, mixed, decimal), GCD/LCM Calculator (multiple integers, factorization), Prime Number Checker (primality test and factorization), Combination and Permutation Calculators (with and without repetition), Fibonacci Generator (first N terms, BigInt), Pearson Correlation Calculator and Linear Regression Calculator.

Frequently asked questions

Are the results mathematically exact?

Yes for integers (GCD, LCM, primes, bases, combinatorics and Fibonacci), which use exact BigInt arithmetic. For correlation and regression, results are double-precision floating-point (IEEE 754), with sufficient precision for most practical cases.

Do these calculators replace specialized software like R or MATLAB?

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