Toolume / tools by task
Math and unit converters
Calculate fractions, averages, standard deviation, GPA and grades, or convert common length, weight, temperature and volume units.
Browse tools
8
GPA CalculatorCalculate your GPA on the 4.0 scale: add courses with credits and letter grades (A to F, with plus/minus) and get your exact grade point average.
Online CalculatorA fast basic calculator for addition, subtraction, multiplication, division, percentages, decimals, negative numbers, and keyboard input.
Random Number GeneratorGenerate truly random numbers in any range — one or many, with or without duplicates, sorted or shuffled. Uses your browser's cryptographic randomness.
Unit ConverterConvert length, weight, temperature, volume, area, and speed in one place instead of opening separate direction-specific pages.
Average CalculatorPaste a list of numbers and instantly get the mean, median, mode, range, sum, min, and max. Learn which average to use and when.
Fraction CalculatorAdd, subtract, multiply, and divide fractions with automatically simplified answers, mixed numbers, and decimal equivalents. Step-by-step rules included.
Grade CalculatorWork out your weighted course grade from assignments and exams, or calculate exactly what score you need on the final to hit your target grade.
Standard Deviation CalculatorCompute sample and population standard deviation, variance, and mean from any list of numbers — with the formulas and when to use each version.
No matching tools
Try a different keyword or clear the filters.