Unlike most GPA converters that support one or two scales, this one covers ten, 4.0 through 20.0, including India's 10.0 and France's 20.0. It's fully bidirectional: convert GPA to percentage or percentage back to GPA in one tool. Every result shows the exact formula used, so nothing is a black box. A live comparison table shows your result across every other scale simultaneously. Free, no sign-up, and built to fix formula inconsistencies I found in other popular calculators.
Hey Product Hunt! 👋
Excited to share the GPA to Percentage Converter, part of GPAConverter, a suite of free calculators I've been building for students.
What inspired this: While researching existing GPA converters for another tool in GPAConverter, I found a genuine problem, one popular calculator's stated formula and its own reference table gave two different answers for the same GPA. That's the kind of thing that quietly erodes trust when a student is relying on a number for a university application or a visa document. I wanted to build a converter where the formula, the table, and the calculator itself could never disagree with each other, because they're all generated from the same source.
The problem I was solving: Most converters I looked at only supported one or two grading scales, usually just 4.0. But GPA scales genuinely vary by country and institution, 10.0 in India, 7.0 in the UK and Australia, 20.0 in France, and students converting between systems (for study abroad, transfers, or international applications) were stuck doing manual math or guessing.
How my approach evolved: I originally planned a simple one-directional converter. But testing it myself, I realized people just as often need to go the other way, starting from a percentage and figuring out the equivalent GPA. So I rebuilt it to be fully bidirectional, and added a live comparison table so you can see your result across all ten scales at once, not just the one you started with.
Would love your feedback, especially from anyone who's dealt with converting grades across countries or institutions. What's still confusing about this process for you? 🙏