Grade Percentage Calculator

How to Use the Grade and Percentage Calculator

This marks percentage calculator turns a score into a percentage and a grade, and it does two more jobs students usually need next. On the Marks to % tab, enter your score and the total to see your percentage, where it sits on a grading scale and how many more marks would reach each higher grade. On the Weighted average tab, add up to 20 assessments with their weights to see your standing so far. On What mark do I need?, enter your target and the final's weight to see the mark that gets you there.

Pick a grading scale to match your course: an Australian university scale (HD, D, C, P, F), an Australian school A–E scale, a US-style letter scale, or percentage only. These are common examples, because every institution and state sets its own boundaries.

The Formulas

Worked Example: 43 out of 50, Then a Weighted Result

You score 43 out of 50 on an assessment. That is 43 ÷ 50 × 100 = 86%, which is a High Distinction (HD) on the Australian university scale, so there is no higher band to reach. Had you scored 40 out of 50, that would be 80% (a Distinction), and you would need 2.5 more marks to reach the 85% needed for an HD.

Now suppose you have two results back: an assignment worth 30% of the course where you scored 40 out of 50 (80%), and a mid-semester exam worth 20% where you scored 65 out of 100 (65%). The assignment adds 80% × 30 ÷ 100 = 24 points and the exam adds 65% × 20 ÷ 100 = 13 points, a total of 37 points from 50% of the course. Your weighted average so far is 37 ÷ 50 × 100 = 74%, a Credit.

The remaining 50% is the final exam. To finish on 75% overall you need (75 − 37) ÷ 50 × 100 = 76% on the final. For a High Distinction at 85% overall you would need 96%, and a Credit at 65% would need 56%.

Grades, Percentages and Rounding

A grade is a band of percentages, so the same grade can come from quite different marks. This calculator places you in the band whose minimum you meet using your exact percentage, which is why 84.99% is a Distinction and 85% is an HD. Some institutions round to a whole number before assigning a grade, which would turn 84.6% into 85%. Check your assessment policy before relying on a borderline result.

Australian universities usually summarise results with a weighted average mark (WAM) or a grade point average (GPA), calculated by rules that differ between institutions, so this tool doesn't convert to either. An ATAR is a rank rather than a percentage of marks, so it isn't something you can calculate from your marks here.

Frequently Asked Questions

How does a score calculator work out my percentage?

A score calculator divides the marks you earned by the total marks available and multiplies by 100. Enter your score and the total above and you get the percentage to two decimal places, the grade band it falls in on the scale you've picked, and how many more marks would lift you into each higher band.

How do I calculate marks as a percentage?

Divide your marks by the total marks and multiply by 100. For example, 43 out of 50 is 43 ÷ 50 = 0.86, and 0.86 × 100 = 86%. The same steps work for any total, whether it's 10, 37.5 or 200, which is why a marks percentage calculator only needs two numbers.

How do I calculate the percentage of marks across several tests?

Don't average the percentages unless every test is worth the same. If the tests carry different weights, multiply each percentage by its weight, add those up, then divide by the total weight completed. The Weighted average tab does this for up to 20 assessments, and it also copes with weights that don't add up to 100% yet because some assessments are still to come.

How do I turn grades into a percentage?

A single letter or HD/D/C/P/F grade stands for a range of percentages, not one number, so you can't convert it back exactly. A Distinction at many Australian universities covers roughly 75–84%, for example, but the cut-offs differ between institutions. To go the other way, from marks to grade, work out the percentage first and then see which band it meets the minimum of.

What percentage is an HD, a Distinction, a Credit or an A?

A common Australian university pattern is HD 85–100, Distinction 75–84, Credit 65–74, Pass 50–64 and Fail below 50. Australian school A–E bands vary by state and school, and the A–E example here uses A 85+, B 70–84, C 50–69, D 30–49 and E below 30. US-style grades often use A 90+, B 80–89, C 70–79 and D 60–69. These are examples only, so confirm the boundaries in your course outline.

Is there a percentage calculator for exams?

Yes. Enter your exam mark and the total marks available on the Marks to % tab and you'll see your exam percentage straight away, plus a conversion table for every possible mark. If the exam is worth part of your overall grade, use the Weighted average tab to see how it moves your result.

What mark do I need on my final exam?

Take the overall result you want, subtract the points you've already banked, then divide by the final's weight. For example, if your completed work is worth 50% of the course and you're averaging 74%, you hold 37 points. To reach 75% overall with a final worth 50%, you need (75 − 37) ÷ 50 = 76% on the final. If the answer is above 100% the target can't be reached on that assessment alone, and if it's zero or below you've already secured it.

How do weighted marks work in a mark calculator?

Each assessment contributes its percentage multiplied by its weight. A 80% result on an assessment worth 30% adds 24 points, and a 65% result on one worth 20% adds 13 points, so you hold 37 points from 50% of the course. Dividing 37 by the 50% completed gives a weighted average of 74%, which is your standing so far.

Should I round my percentage, and what about bonus marks?

Many institutions round to a whole number, but policies differ, so check yours. This calculator uses the unrounded percentage to choose the grade, which means 84.99% is a Distinction rather than a High Distinction, and it shows two decimal places. It won't accept a score above the total, so for bonus marks either add the bonus marks to the total, or cap your score at the total if bonus marks don't count in your course.

How do percentages relate to WAM, GPA and ATAR?

Australian universities report overall results using a weighted average mark (WAM) or a grade point average (GPA), depending on the institution, and each has its own rules for how subjects and grades are counted. This calculator doesn't convert to either, because the method is set by your university. An ATAR is a rank out of 99.95, not a percentage of marks, so a mark percentage can't be converted into an ATAR.