Grade Calculator

Calculate your weighted average grade from multiple assessments. Enter grades and weights to find your overall score and letter grade.

Enter values and click Calculate

Calculate Weighted Average Grade

This Grade Calculator computes your overall grade by taking into account the weights (percentages) of individual assignments. It supports any number of assessments and optionally applies equal weighting if no weights are provided. The final result includes a numeric average and a letter grade based on standard 90/80/70/60 thresholds.

Formula

\text{Weighted Average} = \frac{\sum (\text{grade} \times \text{weight})}{\sum \text{weights}}

How to Use?

Enter grades as comma‑separated numbers (e.g., 85,90,78).
Optionally, enter corresponding weights as percentages (e.g., 20,30,20).
If no weights are given, equal weight is assumed.
The calculator shows weighted average and letter grade.

Worked Examples

Example

Given:inputs

gradesInput:85,90,78

weightsInput:20,30,50

Result:calculated

avg:82.2

letter:B

Weighted Grades

Different assignments may have different importance. This calculator accounts for that by multiplying each grade by its weight, summing, and dividing by total weight.

Letter Grade Mapping

Standard mapping: A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, F < 60.

Table: Grade Calculation Examples

Grades	Weights	Average	Letter
85,90,78	20,30,50	82.2	B
75,80,95	25,25,50	86.25	B

FAQs

What if I don’t enter weights?

All grades are averaged equally.

Can I use decimal grades?

Yes, numbers with decimals are accepted.