## Grade calculator

Enter weights and grades and press the *Calculate* button (for simple average enter weight of 1 for each grade):

## Weighted grade calculation

The weighted grade is equal to the sum of the product of the weights (w) in percent (%) times the grade (g):

*Weighted grade* = *w*_{1}×*g*_{1}+* w*_{2}×*g*_{2}+* w*_{3}×*g*_{3}+...

When the weights are not in percent (hours or points...), you should also divided by the sum of the weights:

*Weighted grade* = (*w*_{1}×*g*_{1}+* w*_{2}×*g*_{2}+* w*_{3}×*g*_{3}+...) / (*w*_{1}+*w*_{2}+*w*_{3}+...)

#### Example

3 points Math course with grade of 80%.

5 points Biology course with grade of 90%.

2 points History course with grade of 72%.

The weighted average grade is calculated by:

*Weighted grade =*

= (*w*_{1}×*g*_{1}+* w*_{2}×*g*_{2}+* w*_{3}×*g*_{3}) / (*w*_{1}+*w*_{2}+*w*_{3})

= (3×80%+ 5×90%+ 2×72%) / (3+5+2) = 83.4%

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