Math & School Calculators
Percentages, fractions, GPA, final grades and random numbers — with the formula and worked steps shown so you can check the answer yourself.
Percentage CalculatorWork out any percentage: X% of Y, what percent one number is of another, percentage change, and increasing or decreasing by a percent. Steps shown.Fraction CalculatorAdd, subtract, multiply and divide fractions. Get the answer in lowest terms, as a mixed number and as a decimal, with every step shown.GPA CalculatorCalculate your GPA on the standard 4.0 scale from letter grades and credit hours. Add your previous GPA to get your new cumulative GPA.Final Grade CalculatorFind the score you need on your final exam to reach the overall grade you want, based on your current grade and how much the final is worth.Random Number GeneratorGenerate random whole numbers in any range, with or without duplicates and optionally sorted. Fair, unbiased and secure — runs in your browser.