Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Convert a letter grade back to its corresponding percentage marks range.
The reverse of the Marks to Grade Converter -- pick a letter grade and see the percentage range it corresponds to on a common 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).
Select a letter grade from the dropdown. The corresponding marks range appears instantly.
The dropdown offers eight letter grades, and each one maps to a range of percentages. The lower end of a range is the grade's minimum score, and the upper end is one below the next grade's minimum, except for the top grade, which goes to 100. The ranges shown by the tool are:
The tool opens with A selected by default. This is one reference scale, and your school may use different cutoffs or different letters, so treat the ranges as a guide.
The upper limits are whole numbers for display, but real scores can include decimals. When the tool shows 80 to 89 for an A, a score of 89.6 still counts as an A in the companion Marks to Grade Converter, which compares exact numbers and only moves up at 90. So think of each range as running from its minimum up to just below the next minimum. If your institution rounds scores before grading, confirm how it handles borderline values.
Say you want a B+ in a course and the final result is out of 100. The tool shows 70 to 79, so you need at least 70 percent overall. If your coursework so far gives you a hypothetical 64 percent weighted contribution and the exam is worth 40 percent of the course, you can work out what the exam must deliver: multiply the exam weight by the exam percentage, add the coursework contribution, and compare the total with 70. Because that weighting is specific to your course, use the Required Marks Calculator or your own arithmetic for the second step, and use this tool only to find the target percentage.
Another use: a scholarship states a minimum grade of A. Select A, read 80 percent as the lowest qualifying score, and then check your current standing against that number.
To go the other direction, entering a percentage and finding the letter, use the Marks to Grade Converter. To combine subjects into one percentage first, use the Semester Percentage Calculator. Grade points for a GPA are a separate concept, so use a GPA calculator if that is what you need.
Not necessarily -- check your institution's official policy, since grade boundaries vary by school and country. This uses a common reference scale.
A is selected by default, showing 80 percent to 89 percent. Change the dropdown to see the range for any of the other grades.
Because the next grade, A+, starts at 90. The displayed upper limit is one whole number below the next minimum, although real scores like 89.5 still fall in A.
The scale lists D from 33 percent as the lowest non-F band, but real pass marks differ by institution and course. Check your official regulations for the pass requirement that applies to you.
No. It only translates a letter into a percentage range. Grade points depend on your institution's own conversion, so use a GPA calculator for that.