About GradeCalcKit
GradeCalcKit is a small collection of free calculators that help students work out their grades without fuss. Whether you need a quick GPA, a weighted average that counts your Honors and AP classes, a cumulative figure across several semesters, or a conversion between GPA and percentage, the aim is the same: give you an accurate answer in seconds.
Free and private by design
Every tool here is completely free. There is no account to create, no email to hand over, and no limit on how many times you can use it. Just as important, every calculation happens on your own device. Your grades are never uploaded to a server and we never see them — the maths runs in your browser and stays there.
Accurate, standard scales
Our calculators use the common US 4.0 scale, including the standard +0.5 Honors and +1.0 AP/IB weighting. Because grading systems vary between schools and countries, we show the scale we use on each page so you can check it against your own school's policy and treat conversions as the estimates they are.
Get in touch
Found a bug, have a scale we should support, or want a calculator we haven't built yet? We would like to hear from you — visit the contact page.