Free Math Tools & Calculators
Free browser-based math calculators that show step-by-step solutions for every answer. Whether you are a student working through homework, a teacher preparing examples, or a professional double-checking calculations, these tools cover percentages, fractions, ratios, averages, standard deviation, permutations, combinations, probability, logarithms, matrices, and trigonometry. Every tool runs entirely in your browser — no data is sent to any server, no sign-up is needed, and nothing is stored. Just enter your numbers, hit calculate, and see the complete working. Perfect for exam preparation, quick verification, and building mathematical intuition.
Notepad Calculator
Type math in a scratch pad and see results instantly. Supports variables, comments, and running totals.
Calculator with Tape
Classic adding machine with scrolling paper tape. Memory, grand total, tax buttons. Print, copy, or download.
Average Calculator
Calculate mean, median, mode, and range from any set of numbers with step-by-step breakdowns.
Exponent & Power Calculator
Calculate powers, roots, and exponential expressions with step-by-step solutions.
Fraction Calculator
Add, subtract, multiply, and divide fractions. Shows simplified results with step-by-step working.
GCD & LCM Calculator
Find the greatest common divisor and least common multiple of any set of numbers.
Logarithm Calculator
Calculate log, ln, log2, or any custom base logarithm with change-of-base formula and antilog.
Matrix Calculator
Add, subtract, multiply, transpose matrices and compute determinants and inverses (up to 4x4).
Percentage Calculator
Calculate percentages, percentage change, and what percentage one number is of another.
Permutation & Combination Calculator
Calculate nPr and nCr with full factorial breakdowns and step-by-step working.
Prime Number Checker
Check if any number is prime and get its complete prime factorization instantly.
Probability Calculator
Calculate single-event, joint, union, conditional, complement, and at-least-one probabilities.
Quadratic Equation Solver
Solve ax² + bx + c = 0 with step-by-step discriminant analysis and real or complex roots.
Ratio Calculator
Simplify ratios, find missing values, and scale proportions with step-by-step solutions.
Square Root Calculator
Calculate square roots, simplify radicals, and check if numbers are perfect squares.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, and more for any data set. Population and sample modes.
Unit Circle Calculator
Find sin, cos, tan, csc, sec, cot for any angle with exact values, reference angles, and quadrant info.
Function Graph Plotter
Plot up to 3 math functions on an interactive graph with grid, axes, zoom, and coordinate tracking.
Multiplication Table
Interactive color-coded times table with row/column highlighting, practice mode, and adjustable grid size.
Number Line Visualizer
Place points on an interactive number line and visualize addition and subtraction as arrow jumps.
Venn Diagram Maker
Create 2- or 3-set Venn diagrams with labels, counts, percentages, and PNG download.
Pie Chart Maker
Create beautiful pie and donut charts in real time with labels, percentages, and PNG download.
Bar Chart Maker
Create vertical or horizontal bar charts with custom data, colors, grid lines, sorting, and PNG download.
Angle Visualizer & Protractor
Interactive protractor to visualize angles. Drag the arm or type degrees to see angle type, radians, and complements.
Coordinate Plane Plotter
Plot points on an interactive x-y grid. Click to add, connect points, and calculate distance and midpoint.
Fraction Visualizer
See fractions as pie charts, bars, and number lines. Compare two fractions side by side and find equivalents.
Area & Perimeter Calculator
Calculate area and perimeter for 7 shapes with scaled SVG drawings and labeled dimensions.
Roman Numeral Converter
Convert between Roman numerals and standard numbers. Supports I to MMMCMXCIX (1-3999) with reference chart.
Number to Words Converter
Convert any number to English words for cheques, legal documents, and invoices. Supports decimals and multiple currencies.