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Three essential tools for students, teachers, and D&D players – all free and blazing fast.

Calculate your letter grade, GPA score, and percentage based on your marks.

Convert between 4.0 GPA scale and percentage instantly, both ways.

Max HP, hit dice, and level-up HP for Dungeons & Dragons 5th edition.

We built these tools to be simple, mobile-friendly, and completely free. No email required, no popups – just the answers you need, right away.