Math Calculators — Percentage, Fraction & Algebra Tools
Scientific calculators, algebra, geometry, statistics and more math tools.
From percentages and fractions to statistics and number theory, these tools show every step of the working next to the result. Each calculator lists its formula and assumptions so you can check the arithmetic yourself, and most include boundary notes (zero, negatives, decimals) so edge cases behave the way the math says they should.
Interactive math tools: Function Grapher — plot y = f(x) instantly and see where it crosses zero · Interactive Geometry Lab — drag a triangle and watch sides, angles, perimeter and area update live.
Scientific Calculator
Advanced scientific calculator with safe evaluation
Quadratic Equation Solver
Solve ax²+bx+c=0 with steps
Percentage Calculator
Calculate percentages
Percentage Change
Calculate percentage increase/decrease
Fraction Calculator
Simplify and calculate fractions
Triangle Calculator
Calculate triangle area and perimeter
Circle Calculator
Calculate circle area and circumference
Statistics Calculator
Calculate mean, median, std dev
Combinations Calculator
Calculate nCr and nPr
LCM & GCD Calculator
Calculate LCM and GCD
Prime Factorization
Find prime factors
Matrix Determinant
Calculate 3x3 determinant
Logarithm Calculator
Calculate logarithms
Exponent Calculator
Calculate powers
Root Calculator
Calculate nth roots
Ratio Calculator
Simplify ratios
Average Calculator
Calculate average of numbers
Pythagorean Theorem
Calculate hypotenuse
Trigonometry Calculator
Calculate sin, cos, tan
Distance Formula
Distance between two points
Slope Calculator
Calculate slope between points
Factorial Calculator
Calculate n!
Modular Arithmetic
Calculate modulo operations
Complex Number Calculator
Operations on complex numbers
Scientific Notation Converter
Convert between decimal and scientific notation
Random Number Generator
Generate random numbers with various options
Cubic Equation Solver
Solve ax³+bx²+cx+d=0 numerically
Geometric Sequence
Find nth term and sum of a geometric progression
Arithmetic Sequence
Find nth term and sum of an arithmetic progression
Polar ↔ Rectangular
Convert between polar and rectangular coordinates
Binomial Probability
P(X=k) in n independent trials
Normal Distribution
CDF and PDF of the normal distribution
Taylor Series Approximation
Approximate functions with Taylor polynomials
Continued Fraction
Evaluate a simple continued fraction
System of Linear Equations
Solve 2×2 linear systems via Cramer rule
Eigenvalue Finder (2×2)
Find eigenvalues of a 2×2 matrix
Surface Area Calculator
Surface area of common 3D shapes
Complex Number Operations
Modulus, argument, and conjugate of a complex number
Mean Median Mode Calculator
Central tendency measures for a dataset
Variance & Standard Deviation
Population and sample variance and SD
Permutation Calculator
Calculate P(n,r) ordered arrangements
Binomial Expansion
Expand (a+b)ⁿ and show its terms
Golden Ratio Calculator
Golden ratio, Fibonacci numbers and Binet approximation
Luhn Algorithm / Checksum
Validate credit-card style numbers with the Luhn check
Run-Length Encoding
Compress repeated characters with run-length encoding
Sieve of Eratosthenes
Find all primes up to N
Fibonacci Sequence
Generate Fibonacci numbers up to n terms
Pascal's Triangle Row
Generate a row of Pascal triangle binomial coefficients
Formulas, worked examples aur edge cases ke liye: Math guides
Frequently asked questions
What is the difference between percentage change and percentage points?
Percentage points measure the gap between two percentages directly — going from 4% to 6% is 2 percentage points. Percentage change measures that gap relative to the starting value — the same move is a 50% increase. Mixing the two up is one of the most common reporting errors.
Why does my calculator give a different answer to my spreadsheet?
Almost always order of operations or rounding. Multiplication and division are evaluated before addition and subtraction, so an expression written without brackets can be read two ways. This calculator shows the intermediate steps, which makes it obvious which reading was used.
When should I use standard deviation instead of range?
Range is easy to read but is driven entirely by the two most extreme values. Standard deviation uses every value, so it describes the spread more faithfully — especially when one outlier would otherwise dominate. Range is still the clearer choice when you only have a handful of readings.
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