Weighted Average Calculator
Calculate weighted averages with per-row contribution percentages and formula breakdown.
Values & weights
Updates as you typeUse case
What are you averaging? ?
Rows
Drag the number to reorder · paste a spreadsheet column anywhere
Label
Value
Weight
Enter on last row adds a new one · Backspace on empty row removes it
Letter grade → points:
A=4.0
A−=3.7
B+=3.3
B=3.0
B−=2.7
C+=2.3
C=2.0
D=1.0
F=0.0
Formula
Weighted average = Σ(value × weight) ÷ Σ(weight)
Each value is multiplied by its weight; the sum of those products is divided by the sum of weights. Higher-weight rows pull the average toward their values.
Simple avg = Σ(value) ÷ count
Shown for comparison — treats all values equally regardless of weight.