Percentage Calculator

Cutoff points: some schools start an A at 90%, others at 93%.
Plus/minus: not every school uses A- / B+ steps.
Weighted courses: AP, IB and honors classes may map to 4.5 or 5.0 instead of 4.0.

Three quick modes: find a percentage of a number, find what percent one number is of another, or measure percent change.

Percentages show one value as a part of another. This calculator handles the three questions students meet most: what X% of Y is, what percent one number is of another, and percent increase or decrease — for test scores, discounts, growth and more.