Weighted grade average calculator, whatever your scale
Grading scales do not travel, but the arithmetic behind an average does. This calculator takes plain numbers and weightings, so it does not care whether your school marks out of 20, out of 10, on a 1 to 6 scale in either direction, or on letters you have already converted to points. Enter what you have, set the weights, read the average. Free, no sign-up, entirely in your browser.
- Free & no sign-up
- Runs in your browser
Grade average
Enter a mark and a weighting per row. Any numeric scale works. Without a weighting, every mark counts equally.
Points to percentage
Convert the points achieved into a percentage.
The percentage is the result. No single grading scale sits behind this page – marks out of 20, out of 10, 9 to 1, a grade point average out of 4.0 and both directions of 1 to 6 are all in use – so only your school's own key can turn it into a grade.
How it works
Enter your marks and – if you like – their weighting.
The average is calculated instantly.
For the points conversion, enter the maximum and achieved points.
Weighted averages and points conversion, explained
How the weighted average works
In a simple mean every mark counts the same: you add them all up and divide by how many there are. At school that is rarely the whole story, because a written exam usually weighs more than an oral contribution or a short quiz. That is what weighting is for. Each mark gets a factor – two for a paper that counts double, say – and the calculator multiplies every mark by its factor, adds the results and divides that sum by the sum of the factors. Enter no weighting and you get the simple mean. This is the part of the page that needs no local knowledge at all: the formula is identical whether the numbers run from 1 to 6, from 1 to 10, from 0 to 20 or from 0 to 100, and it does not matter which end of your scale is the good one. What is not universal is which weighting you are allowed to apply. That comes from your school and from whichever authority sets its assessment rules, so it is worth confirming before an average carries any weight.
Why the percentage matters more than the grade
The second calculator translates points into a grade. You enter the maximum available and the points actually achieved; that produces a percentage, and the percentage falls into a band. The percentage is the transferable number here, and the band is not. Scales differ in range and, more awkwardly, in direction. In Germany marks run from 1 to 6 with 1 as the best; in Poland the same 1 to 6 range runs the other way, with 6 as the best. The Netherlands marks out of 10, France out of 20, English GCSEs use 9 to 1, and United States averages are usually expressed as a grade point average out of 4.0. A conversion that is right in one of those is wrong in all the others, which is why this page will not tell you what counts as a good number. That is why this calculator stops at the percentage and prints no grade beside it: whichever key it picked would be wrong for most readers of this page. Read the percentage and apply the thresholds your own school uses. Even inside one country the thresholds are rarely universal, because school type and subject rules commonly move them.
From calculator to ongoing grade management
A calculator answers a single question: where do things stand right now? Across a whole school year the task is different – many teaching groups, several subjects, dozens of individual marks and, at the end, a report grade that has to be defensible. Anyone doing that in spreadsheets maintains formulas by hand and carries mark lists around on private devices, even though marks need careful handling: they describe achievement over years and shape transitions and qualifications. In SchuleVernetzt you set weightings once per subject, record marks on the go and keep the average in view at all times – encrypted, hosted inside the EU, with a data processing agreement and a role concept. The calculator on this page stays as it is and keeps working without any sign-up.
Frequently asked questions
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