How University Grades Are Calculated
Most university grade calculations use credits to decide how much each module contributes. Larger-credit modules have a bigger effect on the average than smaller-credit modules.
Different universities may convert or classify the final average differently, so treat this as a planning estimate.
This tool works with a generic credit-weighted average, which is the calculation method used by most university systems worldwide, even where the specific classification labels (letter grades, GPA, honours classes) differ.
Credit-Weighted vs Simple Average
A simple average treats every module or subject equally, regardless of how many credits or hours it represents. A credit-weighted average instead multiplies each mark by its credit value before dividing by the total credits, so larger modules (like a dissertation or major project) have a bigger effect on the overall result.
Most universities use credit-weighted averages for official grade calculations, which is why this calculator asks for both a mark and a credit value for each module rather than just a list of marks.
Frequently Asked Questions
What's the difference between a weighted average and a simple average?
A weighted average accounts for how many credits each module is worth, so larger modules affect the result more. A simple average treats every module equally, regardless of size.
Can I use this calculator for non-UK grading systems?
Yes, the underlying credit-weighted average calculation is the same method used by most university systems worldwide. For country-specific bands (like UK classifications, Australian WAM, or Canadian GPA), use the dedicated calculators linked below instead.
What if my university uses letter grades instead of percentages?
You'll need to convert letter grades to their numeric equivalent (using your university's official conversion scale) before entering them here, since this tool works with numeric marks and credit values.
Do all universities weight credits the same way?
No. Credit values, year weighting, and whether early years count at all differ significantly between institutions and countries, so always check your own university's official regulations alongside this estimate.
How accurate is a self-calculated grade compared to my official transcript?
It should be close if you enter the same marks and credit values your university uses, but official transcripts may apply rounding rules, compensation, or borderline reviews that a simple calculator can't fully replicate.
Can I use this partway through a degree to track my progress?
Yes, many students use it to see how their current average would need to change to reach a target classification or GPA band by the end of their course.