Math calculators
Math calculators handle percentages, fractions, ratios, statistics, grades, number bases, and unit conversion. Results update as you type, and each page states the formula it uses.
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Percentage CalculatorCalculate X percent of Y, what percent X is of Y, and Y after an increase or decrease of X percent, all from two numbers.Unit ConverterConvert a value between units of length, weight, area, volume, temperature, speed, time, data, pressure, and energy in one table.CalculatorEvaluate typed math expressions with brackets, powers, roots, percentages, factorials, logarithms, and trigonometric functions, one per line.Fraction CalculatorAdd, subtract, multiply, or divide two fractions or mixed numbers and get the simplified result as a fraction, mixed number, and decimal.GPA CalculatorCalculate your grade point average on the 4.0 scale from a list of letter grades and the credit hours for each course.Statistics CalculatorCalculate the mean, median, mode, standard deviation, variance, quartiles, range, and sum from a list of numbers you paste in.
All 36 math calculators, A to Z
- Add Commas to IntegersAdd thousands separators to every long number in a block of text, using a comma, a dot, or a space between each group of three digits.
- Area CalculatorCalculate the area and perimeter of a rectangle, circle, triangle, trapezoid, or ellipse from the dimensions you enter.
- Binary CalculatorAdd, subtract, multiply, divide, or apply AND, OR, and XOR to two binary numbers and see the result in binary, decimal, hex, and octal.
- CalculatorEvaluate typed math expressions with brackets, powers, roots, percentages, factorials, logarithms, and trigonometric functions, one per line.
- Common Denominator CalculatorFind the least common denominator of two or more fractions and rewrite each fraction with that shared denominator.
- Decimal to Fraction CalculatorConvert a decimal number to a fraction in lowest terms, shown with its mixed number form and the equivalent percentage.
- Equation SolverSolve a linear or quadratic equation ax² + bx + c = 0 from the coefficients a, b, and c, including complex roots and the vertex.
- Fibonacci GeneratorGenerate the Fibonacci sequence from 0 up to the number of terms you choose, with exact values for as many as 1,000 terms.
- Final Grade CalculatorCalculate the score you need on the final exam from your current grade, your target grade, and the weight of the final.
- Fraction CalculatorAdd, subtract, multiply, or divide two fractions or mixed numbers and get the simplified result as a fraction, mixed number, and decimal.
- GCD & LCM CalculatorFind the greatest common divisor (GCD) and least common multiple (LCM) of two or more whole numbers entered as a list.
- GPA CalculatorCalculate your grade point average on the 4.0 scale from a list of letter grades and the credit hours for each course.
- Grade CalculatorCalculate a weighted final grade from the score and percentage weight of each component, such as homework, midterm, and final exam.
- Hex CalculatorAdd, subtract, multiply, divide, or apply bitwise operations to two hexadecimal numbers and see the result in hex, decimal, binary, and octal.
- Linear Algebra CalculatorSolve a system of linear equations by Gaussian elimination: type the augmented matrix and get the solution or learn why none exists.
- Matrix CalculatorAdd, subtract, and multiply matrices, and find the determinant, inverse, transpose, and rank of a matrix typed one row per line.
- nCr Combinatorics CalculatorCalculate combinations (nCr), permutations (nPr), and n factorial from a total number of items n and a number chosen r.
- Number List GeneratorGenerate a sequence of numbers from a start value to an end value with a chosen step, separator, and optional leading zeros.
- Percentage CalculatorCalculate X percent of Y, what percent X is of Y, and Y after an increase or decrease of X percent, all from two numbers.
- Percentage Change CalculatorCalculate the percentage increase, decrease, or difference between a starting value and an ending value, plus the plain difference.
- Prime Number CheckerCheck whether a whole number is prime, list its prime factorization, and find the next prime number after it.
- Raise GPA CalculatorFind the grade point average you need in your remaining credits to raise your cumulative GPA to a target, and whether it is reachable.
- Ratio CalculatorSimplify a ratio A : B to its smallest whole numbers and solve for the missing value X in the proportion A : B = C : X.
- Roman Numeral ConverterConvert numbers from 1 to 3999 to Roman numerals or Roman numerals back to numbers, one value per line, with validation of the form.
- Ruler Drop TestConvert the distance a dropped ruler falls before you catch it into a reaction time in milliseconds, averaged over several attempts.
- Simplify Fractions CalculatorReduce a fraction to lowest terms, or convert a fraction to a decimal and a percentage, from a single fraction or decimal you enter.
- Simpson's Rule CalculatorApproximate a definite integral with Simpson's 1/3 rule: enter a function of x, the limits, and an even number of intervals.
- Single Rule of Three DirectFind the fourth value in a direct proportion from three known values, where a larger first quantity means a larger result.
- Single Rule of Three InverseFind the fourth value in an inverse proportion from three known values, where a larger first quantity means a smaller result.
- Sort NumbersSort a list of numbers in ascending or descending order and filter it by minimum, maximum, even or odd, with duplicates removed.
- Statistics CalculatorCalculate the mean, median, mode, standard deviation, variance, quartiles, range, and sum from a list of numbers you paste in.
- Test Grade CalculatorCalculate a test score as a percentage and letter grade from the number of questions and the number of wrong answers.
- Trigonometry CalculatorCalculate sine, cosine, tangent, cosecant, secant, and cotangent for an angle entered in degrees or radians.
- Unit ConverterConvert a value between units of length, weight, area, volume, temperature, speed, time, data, pressure, and energy in one table.
- Vector CalculatorCalculate the sum, difference, dot product, cross product, magnitudes, angle, and projection of two vectors in 2D or 3D.
- Z-Score CalculatorCalculate the z-score of a value from the mean and standard deviation, with the percentile below it on a normal distribution.