Average Grade Calculator
Calculate the average of your grades with detailed statistics including median, range, and standard deviation.
Enter Grades
Enter each grade score to calculate the average and view statistics.
Average Grade
85.8%
Letter Grade: B
📊Average
85.8%
📝Letter Grade
B
📈Highest
92%
📉Lowest
78%
Statistics:
Mean (Average):85.75%
Median:86.50%
Range:14.00
Standard Deviation:5.12
Total Items:4
Sum of Grades:343
Grade Summary
Your 4 grades average to 85.8% (B). Scores range from 78% to 92%.
Understanding Grade Statistics
Mean vs Median
Mean is the sum divided by count. Median is the middle value. Large differences may indicate outliers.
Standard Deviation
Measures how spread out your grades are. Lower values mean more consistent performance.