From basic arithmetic to advanced calculus — every math tool you need.
17 CalculatorsAdd, subtract, multiply, and divide fractions with step-by-step solutions. Includes mixed numbers, improper fractions, and automatic simplification.
Calculate percentages instantly — what is X% of Y, what percent is X of Y, and percentage increase or decrease. Works for tips, discounts, grades, and more.
Calculate percentage increase, decrease, or difference between two numbers. Includes a reverse calculator to find original values, and a multi-period tracker for revenue, stock prices, and test scores.
Simplify ratios, solve ratio proportions, and scale ratios up or down. Works for recipes, maps, blueprints, and any proportional relationship.
Convert any number to Roman numerals or Roman numerals to numbers instantly. Includes date converter for tattoos and inscriptions, year lookup, and full reference chart.
Reduce any fraction to its simplest form instantly. Shows the GCD used and all simplification steps. Also converts to mixed numbers and decimals.
Solve linear and quadratic equations step by step. Enter any equation and get the solution with a full explanation of each step.
Calculate any base raised to any power, including negative and fractional exponents. Includes scientific notation conversion and step-by-step breakdown.
Plot equations and functions on an interactive graph. Supports multiple functions, zoom, and trace. Great for algebra and calculus visualization.
Full-featured scientific calculator with trigonometry, logarithms, exponents, roots, memory functions, and more. Works on all devices.
Calculate square roots, cube roots, and nth roots of any number. Shows simplified radical form and decimal approximation to any precision.
Generate truly random numbers in any range. Supports integers, decimals, multiple numbers, and unique sets. Great for games, lotteries, and sampling.
Calculate mean, median, mode, variance, and standard deviation for any data set. Enter values separated by commas and get full statistics with step-by-step work.
Solve for speed, distance, or time — enter any two values and get the third instantly. Includes unit conversion between mph, km/h, knots and more, plus real-world reference examples for driving, running, and flying.
Solve any triangle — SSS, SAS, ASA, AAS, and the ambiguous SSA case. Find sides, angles, area, perimeter, and height using Law of Sines and Cosines, with step-by-step solutions and a triangle diagram.
Calculate your GPA for a single semester or cumulative across all semesters. Supports 4.0 and weighted grading scales with customizable credit hours.
Calculate your current grade based on assignments, tests, and weighted categories. Find out exactly what score you need on your final exam to reach your target grade.