Free Math Tools Online
33 free tools — no signup required
Calculators and solvers for everyday math, statistics, and geometry. From basic percentages and averages to standard deviation, matrix operations, and quadratic equations. Also includes practical calculators for BMI, tips, discounts, GPA, and loan payments.
Percentage Calculator
Calculate percentages, percentage change, and percentage differences.
Scientific Calculator
A full-featured scientific calculator with advanced math functions.
BMI Calculator
Calculate your Body Mass Index and see your health category.
Age Calculator
Calculate exact age in years, months, and days from a birthdate.
Loan Calculator
Calculate monthly payments, total interest, and amortization schedules.
Compound Interest Calculator
Calculate compound interest with customizable rates and periods.
Tip Calculator
Calculate tips and split bills between multiple people.
Discount Calculator
Calculate sale prices, discount amounts, and savings.
Roman Numeral Converter
Convert between Roman numerals and decimal numbers.
Random Number Generator
Generate random numbers within a custom range.
GPA Calculator
Calculate your Grade Point Average from your course grades.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions.
Matrix Calculator
Perform matrix operations: addition, multiplication, determinant, inverse, and transpose.
Quadratic Equation Solver
Solve quadratic equations and show the discriminant, roots, and vertex.
Prime Number Checker
Check if a number is prime and find prime factors.
GCD & LCM Calculator
Calculate the Greatest Common Divisor and Least Common Multiple of numbers.
Number to Words
Convert numbers to their written word form in English.
Ratio Calculator
Solve ratio and proportion problems with missing values.