Test Grade Calculator

Enter the number of questions (or points) on a test and how many you got right, and this calculator gives the percentage, the letter grade, the 4.0-scale grade points and the number you missed. Teachers use it as a quick grader when marking a stack of papers; students use it to turn a raw score like 19/25 into something they can compare across tests.

The letter grades follow the widely used US plus/minus scale (93+ is an A, 90–92 an A−, and so on down to below 60 for an F). Your school's scale may differ — some use 90/80/70/60 cut-offs without pluses and minuses, and some put an A at 94 — so check the syllabus before relying on the letter.

One test is usually only part of a course grade. To combine tests, homework and exams by their weights, use the weighted average calculator; to find what you need on an upcoming exam, use the final grade calculator.

Bonus points are added to the numerator only, so they can push a grade above 100%. Some teachers cap a test at 100% or apply extra credit to the course total instead — follow their rule. Grade points use the common 4.0 conversion (A = 4.0, A− = 3.7, B+ = 3.3 …); an A+ is often still 4.0. This page also serves the "grade to percentage" and "test score percentage" searches: the arithmetic is the same whether you count questions or points.

This is the scale the calculator uses. It is the most common US high school and college plus/minus scale, but not universal.

When every question counts equally, each one is worth 100 ÷ total percentage points. That is how to spot the score needed for a grade without a calculator.

• 10 questions: 10 points each. 9/10 = 90%.
• 20 questions: 5 points each. 17/20 = 85%.
• 25 questions: 4 points each. 23/25 = 92%.
• 40 questions: 2.5 points each. 36/40 = 90%.
• 50 questions: 2 points each. 45/50 = 90%.

To average several test grades into a class grade, the GPA calculator handles letters and credits, while a weighted average handles percentages and category weights.

• Partial credit: on written answers, use points earned and points possible, not question counts.
• Negative marking: some exams subtract a fraction of a question's marks for each wrong answer (often a quarter on multiple-choice entrance tests). Subtract the penalty from the correct count before entering it.
• Dropped questions: if a teacher throws out a flawed question, remove it from the total as well as from your score.
• Different scales: the UK and many other countries use bands such as 70%+ for a first-class mark at university, so a US letter grade does not translate directly.