This free online algebra and math calculator collection includes calculators designed to assist in the memorization of math facts, formulas, and rules, as well as to provide quick answers to common homework problems and tasks. The main goal of this section is to help parents and students to complete homework assignments in less time and with less stress.
Adding Subtracting 2 Fractions Calculator for Like or Unlike Denominators
This free online fraction calculator will add one fraction to another, or subtract one fraction from another, and then simplify the resulting fraction. Plus, the add subtract calculator will show its work and give a step-by-step summary of how it arrived at the answer. Also includes How Do You Add Fractions with Different Denominators? and What Are the Steps to Subtract Fractions?

Adding Subtracting 3 Fractions Calculator for Like or Unlike Denominators
This free online fraction calculator will add or subtract 3 fractions at once, and then give the result in the simplified and proper form. Plus, the calculator will show its work and give a step-by-step summary of how it arrived at the answer. Also includes How Do You Add 3 Fractions?

Adding and Subtracting Mixed Numbers Calculator
This calculator will add one mixed number to another, or subtract one mixed number from another, and then simplify the result and convert the improper fraction back to a mixed number if necessary. Plus, the calculator will display the steps and their explanations in the results. Also includes How Do You Add and Subtract Mixed Numbers? and an example of How to convert a Mixed Number to an Improper Fraction.

Algebra Calculator for Solving All Types of Math Problems
This free online algebra calculator will solve all types of equations, including basic math, algebra, pre-algebra, trigonometry, calculus, precalculus, and statistics equations. This calculator is provided by Mathway ®, the number one online problem solving resource for students, parents, and teachers.

Circle Calculator to Calculate Area, Circumference, Diameter, and Radius
This free online geometry calculator will solve for the three unknown circle measurements from one known measurement. Plus, the calculator displays the steps, formulas, and sequence used to calculate each unknown measurement in the results. Also includes a circle diagram depicting each measurement, accompanied by a brief definition of each and the method of solving for them.

Combination Calculator To Find All Possible Combinations
This combination generator will quickly find and list all possible combinations of up to 6 letters or numbers, or a combination of letters and numbers. You can choose to have the result set sorted in ascending or descending order, and you can choose to have the result displayed in either a copy-n-paste field, or in a numbered table.

Compare Fractions Calculator for Comparing and Ordering Fractions
This free online fraction calculator will compare one fraction with another to determine which is greater. Plus, the fraction comparison calculator will show its work and give a step-by-step summary of how it arrived at the result. Also includes How Do You Compare Fractions? and Comparing Fractions with Different Denominators .

Dividing Fractions Calculator Including Whole and Mixed Numbers
This free online fraction calculator will divide any combination of a fraction, a whole number, or a mixed number, and then simplify the resulting fraction. Plus, the fraction division calculator will show its work and give a step-by-step summary of how it arrived at the quotient. Also includes How to Divide Fractions , Dividing Fractions and Mixed Numbers , and Dividing Fractions By Whole Numbers .

Exponent Calculator for Solving Exponential Expressions
This free online math calculator will calculate the result of raising a number (base) to a given power (exponent), including exponential expressions that have negative bases and/or exponents. Also includes brief explanations covering Exponent Definition , Negative Exponents , and Be Aware of Negatives and Parenthesis .

Fraction Reducer Calculator to Reduce Fractions to Simplest Form
This free online fraction calculator will quickly simplify fractions to their simplest form, plus convert improper fractions into their mixed number equivalents. Also includes What Does it Mean to "Reduce Fractions? , How To Simply Fractions , and Converting Improper Fractions.

Greatest Common Factor Calculator: Tool to Find GFC of up to 4 Numbers
This free online greatest common factor tool will help you to quickly find GCF for 2, 3, or 4 numbers at once -- all in the blink of an eye -- plus show the GFC divisors and all factors for all numbers entered. Includes brief answers to What Are Factors? , What Are Common Factors? , and What is a Greatest Common Factor?

LCM Calculator: Tool to Find Least Common Mulitple of up to 4 Numbers
This free online least common multiple tool will help you to quickly find LCM for 2, 3, or 4 numbers at once -- all in the blink of an eye -- plus show the LCM divisors and all preceding multiples for all numbers entered. Includes brief answers to What Are Multiples? , What is a Common Multiple? , and What is a Least Common Multiple?

Linear Equation Solver for Solving Equations with One Variable
This free online linear equation calculator will solve most one-variable linear equations -- including those having fractions and decimals -- plus simplify the solution and show the steps it took to arrive at the result. This page also includes a brief answer to What is a Linear Equation? and a step-by-step example showing How to Solve Linear Equations.

Long Division Calculator for Dividing Whole or Decimal Numbers
This free online division calculator will not only perform long division, but it will also show and explain each step it took to solve the problem. Plus, besides showing its work, the calculated results include a chart showing multiples of the divisor so you can learn your math facts while you are doing your long division practice . And not only does the calculator help you to learn how to do long division , but the page also includes tutorials for four of the most common long division quotients (with remainder, without remainder, decimal with no remainder, decimal with recurring remainder).

Multiplying Fractions Calculator Including Whole and Mixed Numbers
This free online fraction calculator will multiply any combination of a fraction, a whole number, or a mixed number, and then simplify the resulting fraction. Plus, the fraction multiplication calculator will show its work and give a step-by-step summary of how it arrived at the product. Also includes How to Multiply Fractions , Multiplying Fractions and Mixed Numbers , and Multiplying Fractions By Whole Numbers .

Online Factoring Calculator for Finding All Factors of a Number
This free online math calculator will quickly find all factors of a number, plus list all of the individual multiplications that the divisors were derived from. Also includes a brief Introduction to Factoring a Number .

Percent Calculator for Calculating Percentages 3 Ways
This free online percentage calculator will calculate a percentage from two numbers, or a number from a percentage and another number. Includes a detailed explanation of How to Calculate Percentages using both the shortcut method and the proportion (cross multiplication) method -- for all three types of percentage calculations.

Percentage Change Calculator to Calculate Percent Increase or Decrease
This free online percentage calculator will calculate the numerical difference, percent difference, fractional change, and percent change between one number and another number. Includes the percent change formula and a detailed example of How to Calculate Percent Change for both an increase and a decrease.

Prime Factoring Calculator for Prime Factorization of a Number
This free online math calculator will quickly generate a list of prime numbers that are factors of a given number, plus simplify the primes into an exponential expression, and show its work so you can verify the result. Also includes a brief answer to What Are Prime Numbers as well as a demonstration of the procedure for Manually Factoring Prime Numbers.

Prime Number Checker to Check if a Number is Prime
This free online prime number calculator will quickly tell you whether or not the entered number is prime (natural) or composite. Plus, if the number is not prime, it will display the first divisor it found, along with the divisor equation and quotient.

Prime Number Generator to Create List of Prime Numbers
This free online prime number list generator will create a custom prime numbers list of up to 10,000 primes, with primes ranging from 2 to 104,730. For example, you could either create a delimited list containing the first 100 prime numbers, or a list of the primes that occur between 100 and 500. Plus, you can also tell the generator to format the list into a prime numbers chart for printing.

Pythagorean Theorem Calculator to Find Missing Side of Right Triangle
This calculator will find the missing side length of a right triangle if the other two side lengths are known. The calculator shows its work and attempts to the draw the shape of the right triangle based on the results. The page also gives brief answers to What is the Pythagorean Theorem? and What is the Converse of the Pythagorean Theorem? , and provides a converse calculator to test whether or not 3 given side lengths equate to a right triangle.

Scientific Notation Calculator to Add, Subtract, Divide, or Multiply Exponential Notations
This calculator will help you to calculate and learn to perform scientific notation math. Page includes brief lessons for adding, subtracting, dividing, and multiplying scientific notation, plus the calculator shows its work so you can learn the steps to solving each type of operation.

Slope Calculator to Find Slope of Straight Line If Two Points Are Known
This free online calculator will find the slope, y-intercept, and angle of a straight line from two entered points. Plus, the calculator will also find the distance between the two points, and formulate the line equation from the points and slope. The calculator will also attempt to plot the two points on a graph and draw the line that runs through them. Includes brief explanations for How to Calculate Slope From Two Points and How to Formulate the Line Equation .

Square Root Calculator for Finding the Square Root of a Number
This free online square root calculator is handy for quickly calculating square roots. Plus, if the radicand is not a perfect square, the square roots calculator will list the nearest perfect squares that are greater and less than the radicand. Includes answers to What are Square Roots? and What Are Perfect Squares? .

Standard Deviation Calculator for Population and Sample Data Sets
This free statistics calculator will calculate the mean, variance and standard deviation of an entered or pasted-in data set, plus convert the results into a step-by-step tutorial that shows you how to manually solve for the standard depreciation formula. Page includes brief explanations and definitions of related terms, as well as an example illustrating how much easier it is to solve the standard deviation formula than it is to decipher the formula.

Statistical Average Calculator for Mean, Median, Mode, and Range
This free statistics calculator will calculate the mean, median, mode, and range of a number set. You can either enter the numbers one at a time, or paste-in a set copied from a document or spreadsheet. Plus, the results include a sorted, custom-delimited, data set along with a distribution table. Page also includes tutorials on how to calculate mean, median, mode, and range.

Timed Math Addition Facts Quiz for Learning 0-12 Additions
This free online addition facts timed test will help you (or your child) to learn math facts for additions of 0-12. Plus, the quiz will store up to 10 quiz results for each fact (addend) practice session, which are then displayed in a printable addition facts practice report card. This report card also includes a bar graph for a visual display of the progress made from the first addition facts timed test to the last.

Timed Multiplication Quiz for Learning Math Facts
This free online multiplication timed test will help you (or your child) to memorize math facts 0-12. Plus, the quiz will store up to 10 quiz results for each fact, which are then displayed in a multiplication drill report card that can be printed out. This report card also includes a bar graph for a visual display of the progress made from the first timed multiplication drill to the last.

Triangle Calculator to Solve SSS, SAS, SSA, ASA, and AAS Triangles
This triangle solver will find three unknown values from any one of five combinations of three known side lengths and/or angles (degrees or radians). The calculator will also classify the triangle and solve and provide formulas for: area, perimeter, semi-perimeter, radius of inscribed circle, radius of circumscribed circle, medians, and heights. Plus, the calculator shows its work and attempts to draw the solved triangle from calculated vertex coordinates.