Math & Statistics Calculators
Solve everyday math problems with percentage calculators, fraction tools, statistics, and algebra solvers.
Percentage Calculator
Calculate percentages, increases, decreases, and percentage changes
Basic Calculator
Simple arithmetic operations with memory functions
Fraction Calculator
Add, subtract, multiply, and divide fractions
Ratio Calculator
Simplify ratios, find equivalent ratios, and solve proportions
Quadratic Solver
Solve quadratic equations ax² + bx + c = 0
GCF & LCM Calculator
Calculate Greatest Common Factor (GCF) and Least Common Multiple (LCM) of numbers
Prime Number Calculator
Check if a number is prime, find primes in a range, or get prime factorization
Mean, Median, Mode Calculator
Calculate mean, median, mode, range and other statistics for a data set
Standard Deviation Calculator
Calculate population and sample standard deviation with variance
Probability Calculator
Calculate probability, combinations, permutations, and odds
Statistics Calculator
Calculate mean, median, mode, range, variance, and standard deviation
Roman Numeral Converter
Convert between numbers and Roman numerals (I, V, X, L, C, D, M)
Scientific Calculator
Advanced mathematical functions and operations
Binary & Hex Converter
Convert between Decimal, Binary, and Hexadecimal number systems
Why Use These Calculators?
100% Free
All calculators are completely free to use with no registration required.
Works Offline
Calculations run instantly in your browser. Results are private and never sent to a server.
18 Languages
Available in all our supported languages with localized currency and formatting.