## How to Calculate Professors Weights In College Grades

March 16th, 2017

BY JANE HURST

2. Calculate Category Percentages – Once you have figured out each category and what they are worth, it is time to calculate the category percentages. You have the points for the categories figured out, so now you have to convert those percentages into real numbers. For example, if you received a 95% in a category that is weighted at 20%, you would multiply .95 by 20, for a total of 19. So, you have 19 points for that particular category.
3. Convert Percentages to Decimals – It is important that when calculating a weighted grade that you always change percentages into decimals, making it easier to multiply. You may even want to check out a grade calculator to make sure that you are getting the right numbers.
4. Multiply by Weight – You will now need to multiply each number by its weight. You have the option to do this at the end of your chart, or to do it on one line in a formula. For instance, you might enter 0.9(0.25) to show a 90% grade, multiplied by 25% of the total grade. This is how you weigh out each score to get to your overall grade. There is just one more step in the process.
5. Add Weighted Scores Together – Now that you have the weighted scores figured out, you will need to add them together. For example, 0.9(0.25) + 0.75(0.50) + 0.87(0.25). The total weighted class score would be 0.8175. Multiply this number by 100 to figure out the percentage, which in this case would be 81.75%.