Marks to Grade Converter

What Is the Marks to Grade Converter?

This tool converts a percentage score into a letter grade using a commonly used standard scale: A+ (90-100), A (80-89), B+ (70-79), B (60-69), C+ (50-59), C (40-49), D (33-39), F (below 33). Institutions vary in their exact grade boundaries -- treat this as a common reference scale, not your specific institution's official grading policy.

How to Use This Tool

Enter your percentage score. The corresponding letter grade appears instantly.

The Scale This Tool Actually Uses

The converter checks your percentage against a list of minimum scores, starting from the top and stopping at the first band you reach. The bands built into the tool are:

• A+ from 90 percent and above
• A from 80 percent
• B+ from 70 percent
• B from 60 percent
• C+ from 50 percent
• C from 40 percent
• D from 33 percent
• F below 33 percent

This is a single reference scale with eight grades, so it will not match every school. Institutions may use different cutoffs, plus or minus grades, or different letters altogether, so treat the result as a general guide.

Boundaries and Decimals

The comparison uses your exact number. A score of 89.9 gives an A, since it is at least 80 but below 90. A score of exactly 90 gives A+. A score of 32.9 gives an F and 33 gives a D. The tool does not round for you, so if your institution rounds 89.5 up to 90 before assigning a grade, enter the rounded figure yourself. Scores below zero or above 100 are not validated as marks, so make sure the number you enter is a real percentage.

A Worked Example

Suppose a hypothetical exam is worth 60 marks and you scored 43. First convert to a percentage: 43 divided by 60 is 0.7167, or 71.67 percent. Enter 71.67 and the tool returns B+, since 71.67 is at least 70 but under 80. If you had scored 41, the percentage would be 68.33 and the grade would be B. If you are working from marks out of a total, you can use the Semester Percentage Calculator to obtain the percentage first.

Interpreting the Grade

• Use it for planning. The grade gives a quick sense of where you stand and how many marks separate you from the next band.
• Do not use it for official claims. A transcript, application, or CV should show the grade your institution actually awarded, not a converted one.
• Check pass marks separately. The scale treats 33 percent as the bottom of a D, but a course may require a higher score to pass, or a minimum in each component.
• Relative grading is different. Some courses assign grades by ranking students against each other. A percentage alone cannot be converted under that system.

Common Mistakes

• Entering raw marks instead of a percentage. A score of 43 out of 60 must be converted first, otherwise 43 would return a C.
• Assuming the same scale applies across countries. Grade letters and cutoffs vary widely between education systems.
• Expecting the result to give a grade point. Letter grades and GPA points are separate; use a GPA-oriented tool when you need points.

Working Backwards

To see the percentage range behind a letter, the Grade to Marks Converter shows the range for each grade on this same scale. Together the two tools let you set a target, such as reaching the B+ band, and then work out the marks you need in remaining assessments.

Frequently Asked Questions