Grade Calculator: Convert Any Test Score to a Percentage and Letter Grade

Grade Calculator: Convert Any Test Score to a Percentage and Letter Grade

Getting a graded paper back with an odd score like "47/56" doesn't tell you much on its own. Converting points earned into a percentage — and then into a letter grade — usually means doing division by hand or reaching for a calculator app. This guide explains the conversion and gives you an instant online tool to do it.

The Basic Formula

Converting any points-based score to a percentage uses one simple formula:

Percentage = (Points Earned ÷ Total Possible Points) × 100

So 47 out of 56 points becomes (47 ÷ 56) × 100 = **83.93%**.

Standard Letter Grade Cutoffs

Once you have a percentage, most US schools map it to a letter grade using cutoffs like these (exact cutoffs vary by school and instructor):

Using the example above, 83.93% falls in the B range.

Why Not Just Estimate?

Rounding in your head is where mistakes creep in — 47/56 might feel like "about 85%" at a glance, but it's actually closer to 84%, which can be the difference between a B and a B+ depending on your school's cutoffs. For anything that affects your transcript, it's worth getting the exact number rather than eyeballing it.

How to Use the Grade Calculator

Using the ToolzGo Grade / Test Score Calculator takes just a few seconds:

• •Go to toolzgo.com/tools/education-tools/grade-percentage-calculator
• •Enter the points you earned
• •Enter the total points possible
• •Instantly see your exact percentage and letter grade

Frequently Asked Questions

Q: What percentage is a B+?

A: On the most common US scale, a B+ is typically 87–89%, though exact cutoffs vary by school and instructor. This tool uses standard cutoffs as a general reference.

Q: Can I use this for any subject or test?

A: Yes — it works for any points-based grading: tests, quizzes, homework, essays scored out of a total, or standardized test raw scores.

Q: Does it round the percentage?

A: The percentage is shown to two decimal places so you can see the exact value, alongside the letter grade it falls under.

If you want to know how a single test score affects your overall course grade, try the ToolzGo Weighted Grade Calculator, or find out what you need on an upcoming final with the Final Grade Calculator.

Convert any score to a percentage and letter grade instantly.