Mathematics
Math Calculator Library
From quick percent and ratio checks to in-depth statistics and sequences, keep homework and planning on track.
Data & probability
Statistics & number insight
Summarize datasets, check prime numbers, and quantify spread with detailed outputs.
Mean, Median & Mode Calculator
Calculate mean, median, and mode for any list of numbers.
Standard Deviation
Calculate population and sample standard deviation.
Random Number Calculator
Generate random numbers with min/max range, uniqueness controls, and sorted output.
Prime Number Checker
Check prime or composite status with smallest divisor, factors, and step-by-step divisibility checks.
Sequence Calculator
Calculate arithmetic and geometric nth terms, generated terms, finite sums, and convergent infinite geometric sums.
Everyday math
Percentages, ratios & conversions
Handle classroom and budgeting work faster with calculators that simplify everyday math.
Basic Calculator
Perform basic arithmetic operations.
Percentage Calculator
Calculate percentages, percentage change, and ratios.
Ratio Simplifier Calculator
Simplify 2-part and 3-part ratios, handle decimals, generate equivalent ratios, and scale to totals.
Fractions Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions.
Power & Root Calculator
Calculate powers and roots of numbers.
Random Choice Picker
Paste a list of options and let the picker choose one (or many) at random.
Algebra & more
Equations, GCF/LCM & everyday math
Solve quadratics, find GCF/LCM, factorials, discounts, markup, and rounding.
GCF & LCM Calculator
Find greatest common factor and least common multiple of two or more numbers.
Quadratic Equation Solver
Solve quadratic equations using the quadratic formula with real and complex roots.
Factorial Calculator
Calculate the factorial of any non-negative integer (n!).
Discount Calculator
Calculate sale price, discount amount, and original price from percentage off.
Margin & Markup Calculator
Convert between profit margin and markup and compute selling price from cost.
Rounding Calculator
Round numbers to a given decimal place or significant figures.