Your score is a number, but what letter grade is it? The School Grade Calculator maps a percentage onto the grade bands your school uses, so you can see the letter behind the figure.
What The School Grade Calculator Does
It converts a percentage or score into a letter grade using grade bands. Where a percentage tells you how much, the grade tells you which band that falls into, such as A, B, or C.
- Turns a percentage into a letter grade.
- Uses the grade bands you set or a common default.
- Helps you read a result the way a school reports it.
- Runs in your browser; nothing is uploaded.
How To Use It
- Enter your percentage or score.
- Confirm or set the grade bands your school uses.
- Read the matching letter grade.
How The Grade Is Worked Out
The tool checks your percentage against the cutoffs for each band and returns the grade it falls into. A common scheme sets 90 and above as an A, the 80s as a B, and so on down the scale.
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A Worked Example
On a scheme where 90 is an A, 80 a B, and 70 a C, a score of 84 falls in the B band. A score of 90 sits right at the A cutoff, which is why the exact boundaries matter.
Change the bands to match your school, and the same percentage can map to a different letter.
Why Grade Bands Vary
There is no single grading scale. Schools set their own cutoffs, some use pluses and minuses, and some add bands like A-star at the top, so the same percentage is not always the same grade.
Always use your school's published bands. A grade from a default scale is only a guide until it matches the cutoffs your result is marked against.
Grades And Grade Points
Letter grades often feed into a grade point average. Knowing the letter is the first step; converting it to points on your school's scale is what builds a GPA or CGPA.
If you need the average rather than a single grade, the grade point tools take each letter and its credits and combine them.
Why Boundaries Matter So Much
A single point can decide a grade. A score that lands one mark below a cutoff drops to the band beneath, which is why it is worth knowing exactly where your school sets each line.
It also helps you aim. If you are a point or two short of the next grade, you know precisely how much more a future assessment needs to lift you across the boundary.
Reading A Grade In Context
A letter grade is a summary, not the full story. Two students with the same B can sit at opposite ends of the band, so the underlying percentage still carries useful detail.
When you compare results across schools, remember the bands differ. The same letter can mean a higher percentage at one school than another, so match the grade to its scale before drawing conclusions.
Related Grade Tools
To turn marks into the percentage this tool grades, use the Percentage Calculator For Marks, and for grade points the GPA Calculator and CGPA Calculator combine letters into an average.
For a single class result, the Final Grade Calculator and Weighted Grade Calculator help you work out the percentage before grading it.
Frequently Asked Questions
How is a letter grade worked out?
Your percentage is checked against the cutoffs for each band, and the grade it falls into is returned.
Are grade bands the same everywhere?
No. Schools set their own cutoffs, so use your school's published bands for an accurate grade.
What is a common grading scale?
One common scheme sets 90 and above as an A, the 80s as a B, and so on, but yours may differ.
How do grades become a GPA?
Each letter maps to grade points on your school's scale, and those are combined by credits into a GPA.
This tool gives a general estimate for planning use only, and is not professional academic or financial advice. Always confirm the figure and the exact rules with your school, college, exam board, or employer. Reviewed by Prof. Dr. Khalil Mudassar (PhD).