Math
Use our free math calculators and tools for everyday calculations and academic work. Calculate ages, dates, fractions, percentages, standard deviations, matrices, and probabilities. Create charts, use a scientific calculator, set timers, and track habits. Perfect for students, teachers, and professionals who need quick, accurate math results.
24 tools
Age Calculator
Calculate your exact age in years, months, and days from your birth date.
→Speed Calculator
Calculate speed, distance or time from any two values. Simple and quick.
→Date Calculator
Calculate days between two dates or add/subtract days from a date.
→Random Number Generator
Generate random numbers with min, max, quantity options and no-duplicate mode.
→Aspect Ratio Calculator
Calculate height for common aspect ratios (16:9, 4:3, 1:1, 21:9) or enter a custom ratio.
→Grade Calculator
Enter grades with weights to calculate weighted average and GPA.
→Countdown Timer
Set a target date and see a live countdown in days, hours, minutes and seconds.
→Fraction Calculator
Add, subtract, multiply and divide fractions with step-by-step solutions.
→GPA Calculator
Calculate your Grade Point Average from courses, credits, and letter grades.
→Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms, and advanced functions.
→Stopwatch
Online stopwatch with lap times, split tracking, and millisecond precision.
→Percentage Change Calculator
Calculate percentage increase or decrease between two values instantly.
→Pomodoro Timer
Focus timer using the Pomodoro Technique: 25-minute work sessions with short and long breaks.
→Habit Tracker
Track daily and weekly habits with streaks, calendar heatmap, and completion stats. Build better routines visually.
→Standard Deviation Calculator
Calculate standard deviation, variance, mean, median, and more. Enter numbers and get complete statistical analysis instantly.
→Matrix Calculator
Perform matrix operations: add, subtract, multiply, transpose, determinant, and scalar multiply. Support for 2x2 and 3x3 matrices.
→Probability Calculator
Calculate probabilities for single events, combined events, conditional probability, and permutations/combinations with step-by-step formulas.
→Chart Maker
Create bar, line, and pie charts from your data. Enter label:value pairs, customize colors and titles, then download as PNG.
→Area Calculator
Calculate the area of any shape: circle, rectangle, triangle, trapezoid, ellipse, parallelogram. With formulas, SVG preview, and unit conversion.
→Binary Calculator
Perform binary operations: AND, OR, XOR, NOT, addition and subtraction with bit visualization and step-by-step results.
→Volume Calculator
Calculate volume and surface area of 3D shapes: cube, rectangular prism, sphere, cylinder, cone, pyramid. Multiple units.
→Roman Numeral Converter
Convert between Roman numerals and decimal numbers. Supports values 1-3999 with input validation, reference table, and conversion history.
→Square Root Calculator
Calculate square roots, cube roots, and nth roots of any number with precision control.
→Pythagorean Theorem Calculator
Calculate the missing side of a right triangle using a² + b² = c². Find area and perimeter too.
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