Grade percentage, weighted grade, and grading curve calculators. Browse our free grades tools below — all calculators are instant, accurate, and require no sign-up.
Bell Curve Grading Calculator — Assign letter grades based on a bell curve (normal distribution). Set mean, standard deviation, and class size to distribute grades fairly.
Final Exam Grade Needed Calculator — Find out what score you need on your final exam to reach your target grade. Enter your current grade, exam weight, and desired grade.
Final Grade Calculator — Calculate your final course grade by combining your current grade with your final exam score. See how exam performance impacts your overall grade.
Grade Average Calculator — Calculate the mean, median, and mode of your grades. Enter multiple scores to see statistical summaries and identify your strongest performance patterns.
Grade Curve Calculator — Calculate curved grades using flat curve, percentage boost, or square-root methods. See how curving affects every student's score and letter grade.
Grade Percentage Calculator — Calculate your grade percentage by dividing points earned by total points. Instantly convert raw scores to percentages and letter grades.
Late Assignment Penalty Calculator — Calculate grade deductions for late assignments. See the penalized score based on days late, penalty rate, and original grade.
Letter to Number Grade Converter — Convert letter grades to GPA points and percentages. Supports A+ through F with plus/minus modifiers on the standard 4.0 scale.
Number to Letter Grade Converter — Convert a percentage score to a letter grade using standard or custom grading scales. See your letter grade, GPA points, and grade description instantly.
Unweighted Grade Calculator — Calculate your simple average grade across all assignments. Add scores, get the mean, median, and mode for a complete picture of your performance.
Weighted Grade Calculator — Calculate your weighted grade by combining category grades with their weights. Perfect for classes with homework, exams, and project weights.