All Calculators
Free calculators for students and teachers — no account, instant results
Why CalcTools?
Instant results
No loading screens, no page reloads. Every calculation updates as you type.
No sign-up ever
Not now, not later. No email, no account, no tracking. Open and use.
Built for students
Every tool is designed around how students and teachers actually work.
Free Grade and GPA Calculators for Students
CalcTools provides free, easy-to-use calculators designed for students at every level — from middle school and high school to college and university. Our most popular tool, the grade calculator, lets you instantly calculate your weighted or unweighted grade across any number of assignments, quizzes, and exams. Just enter your scores and weights — your grade updates as you type, no page reload needed.
Teachers looking for a fast grading tool will find our Ez Grader invaluable. Enter the total number of questions on a test and get a complete grade scale in seconds — every possible score mapped to a letter grade instantly. No more mental math between classes.
For students tracking their academic standing, our GPA calculator and weighted GPA calculator make it simple to see exactly where you stand. Whether you're in standard, honors, AP, or IB courses, just enter your letter grades and credit hours to get your semester or cumulative GPA instantly.
Need to know what you need on your final exam? Our final grade calculator tells you exactly what score you need to hit your target grade — a must-have tool during exam season. College students can use our college GPA calculator to track GPA across multiple semesters in one place.
Every tool on CalcTools is completely free, requires no account or sign-up, and works on any device. We built these tools because students need fast, accurate answers — not paywalls, not email forms, not loading screens. Just open the tool and calculate.