🔢 Math Calculators
From homework to statistics, with the steps shown. Add and divide fractions with automatically simplified answers, get every average of a data set at once, compute both flavors of standard deviation, work out your GPA or the score you need on a final, and draw genuinely random numbers. Each page teaches the method alongside the answer.
- Fraction Calculator
Add, subtract, multiply, and divide fractions with automatically simplified answers, mixed numbers, and decimal equivalents.
- Average Calculator
Paste a list of numbers and instantly get the mean, median, mode, range, sum, min, and max.
- Standard Deviation Calculator
Compute sample and population standard deviation, variance, and mean from any list of numbers — with the formulas and when to use each version.
- GPA Calculator
Calculate 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.
- Grade Calculator
Work out your weighted course grade from assignments and exams, or calculate exactly what score you need on the final to hit your target grade.
- Random Number Generator
Generate truly random numbers in any range — one or many, with or without duplicates, sorted or shuffled.