Math Calculators

Our math calculators handle everything from basic arithmetic to geometry and statistics. Whether you need to work with percentages, simplify fractions, or calculate the area of a shape, these tools give you fast answers with clear explanations.

Circle Area Calculator — Radius, Diameter & Circumference

Calculate the area, circumference, and diameter of a circle from its radius or diameter. Useful for round tables, pools, lawns, pipes, and geometry homework problems.

Cylinder Calculator — Volume & Surface Area Solver

Calculate cylinder volume, total surface area, lateral surface area, and base area from radius and height. Shows formulas and step-by-step results.

Fraction Calculator — Add, Subtract, Multiply & Divide

Add, subtract, multiply, and divide fractions with step-by-step solutions. Simplify results automatically and convert between mixed numbers and improper fractions.

GPA Calculator — Semester & Cumulative Grade Average

Calculate your semester or cumulative GPA on a 4.0 scale. Enter letter grades and credit hours for each course to track your academic performance and plan improvements.

Mean, Median, Mode Calculator — Descriptive Statistics

Calculate mean, median, and mode for any set of numbers. Also computes sum, range, minimum, maximum, and other descriptive statistics.

Percentage Calculator — Find, Change & Compare Percents

Calculate percentages quickly and accurately. Find what percent a number is of another, compute percentage change, and add or subtract a percentage from any value.

Probability Calculator — Single, Joint & Binomial

Calculate probability for single events, two independent events, and binomial distributions with step-by-step solutions. Shows complement, intersection, and union results.

Quadratic Equation Calculator — Roots, Discriminant & Vertex

Solve any quadratic equation ax² + bx + c = 0 using the quadratic formula. Find real or complex roots, the discriminant value, and vertex coordinates of the parabola.

Pythagorean Theorem Calculator — Find Missing Sides

Calculate the missing side of a right triangle using the Pythagorean theorem (a² + b² = c²). Solve for the hypotenuse or either leg with step-by-step results shown.

Scientific Calculator — Trig, Logs, Powers & Constants

Solve trigonometry, logarithms, powers, and factorials with a scientific calculator supporting sin, cos, tan, log, ln, π, and e in degree or radian mode.

Slope Calculator — Rise Over Run & Line Equation

Calculate the slope between two coordinate points, find the y-intercept, and get the full line equation in slope-intercept form (y = mx + b) for algebra and geometry.

Sphere Calculator — Volume and Surface Area by Radius

Calculate the volume, surface area, and circumference of any sphere by entering its radius. Uses the formulas V = (4/3)πr³ and A = 4πr² for instant results.

Test Grade Calculator — Score Percentage & Letter Grade

Calculate your test score percentage and letter grade instantly. Enter points earned and total points to see your result on the A+ through F grading scale.

Triangle Calculator — Area, Perimeter & Angles Solver

Calculate triangle area, perimeter, and angles from sides or angles. Supports SSS, SAS, AAS modes using Heron's formula, law of cosines, and law of sines methods.

Z-Score Calculator — Standard Score & Percentile Finder

Calculate the Z-score from a value, mean, and standard deviation, or convert a Z-score to cumulative probability and percentile. Essential for statistics and data analysis.

What types of math problems can you solve here?

This category includes tools for common math operations that come up in school, work, and everyday life. Use the percentage calculator for quick percent-of and percent-change problems, the fraction calculator for addition, subtraction, multiplication, and division of fractions, or the geometry tools for areas and measurements of common shapes. You'll also find a scientific calculator, GPA calculator, z-score calculator, and 3D geometry tools for spheres and cylinders.

How does the percentage calculator work?

The percentage calculator handles several types of percentage problems: finding a percentage of a number, calculating what percentage one number is of another, and determining percentage increase or decrease between two values. Enter your numbers and get the result instantly along with the formula used.

Can I calculate areas and dimensions of shapes?

Yes. The circle area calculator computes the area, circumference, and diameter from any known measurement such as the radius. The triangle calculator finds area, perimeter, angles, and side lengths using various input combinations like base and height, three sides, or two sides and an angle.

How does the fraction calculator simplify results?

The fraction calculator performs arithmetic on fractions and mixed numbers, then automatically simplifies the result to its lowest terms. It shows each step of the calculation so you can follow along, making it useful for homework, recipes, or any situation involving fractional measurements.

What statistical calculations are available?

The mean, median, and mode calculator takes a set of numbers and computes all three measures of central tendency at once. It also shows the sorted data set and the count of values, which is helpful for quickly analyzing small data sets in schoolwork, surveys, or data analysis tasks.

What 3D geometry calculators are available?

The sphere calculator computes volume and surface area from the radius, useful for tasks involving balls, tanks, domes, and other round objects. The cylinder calculator finds volume and surface area from the radius and height, which applies to pipes, cans, storage tanks, and packaging design. Both tools show the formulas used and accept different input combinations.

What advanced math tools can I use?

The scientific calculator supports order of operations, trigonometric functions, logarithms, exponents, and parentheses — covering the same operations as a physical scientific calculator. The GPA calculator converts letter grades and credit hours into grade point averages, supporting both unweighted and weighted GPA calculations. The z-score calculator determines how many standard deviations a value is from the mean, which is essential for statistics coursework and understanding normal distributions.