Tools in Math

Everyday math tools: percentages, increases and discounts, and grade point average (GPA), explained step by step.

GPA calculator (4.0 scale)Enter up to 6 courses with grades and credit hours to get your GPA on the 4.0 scale instantly. Free, no sign-up, with the formula fully worked out.
Percentage calculatorFind 25% of 200, what percent one number is of another, plus increase and decrease, all four answers at once. Free, instant, with worked examples.