Average Percentage Calculator

This average percentage calculator can determine the simple or weighted average of multiple percentage values.

comma or space separated

Percentage (%) Weight
Related Reverse Percentage Calculator Percentage Increase Calculator Percent to Total Calculator Percent to Fraction

Created by: Jainisha Pansuriya

How to Calculate Simple Average Percentage

The following formula is used:

Average (%) = Sum of all percentages ÷ Number of percentages

or

Average (%) = (P1 + P2 + P3 + ... + Pn) ÷ n

Example 1:

Find the average of 25%, 32%, 43%, 55%, and 70%.

Apply the values in the formula:

= (25 + 32 + 43 + 55 + 70) ÷ 5

= 225 ÷ 5

= 45%

Example 2:

Find the average of 60%, 88%, and 140%.

= (60 + 88 + 140) ÷ 3

= 288 ÷ 3

= 96%

How to Calculate Weighted Average Percentage

The following formula is used:

Weighted Average (%) = ∑(Pi × Wi) ÷ ∑(Wi)

or

Weighted Average (%) = (P1W1 + P2W2 + ... + PnWn) ÷ (W1 + W2 + ... + Wn)

Example 1:

Calculate the weighted average (%) for:

  • Math: 90% (Weight - 3)
  • Physics: 95% (Weight - 4)
  • English: 87% (Weight - 2)

Apply the values in the formula:

= (90×3 + 95×4 + 87×2) ÷ (3 + 4 + 2)

= (270 + 380 + 174) ÷ 9

= 824 ÷ 9

= 91.56%

Example 2:

  • Homework: 88% (Weight - 2)
  • Midterm: 65% (Weight - 3)
  • Final Exam: 70% (Weight - 5)

= (88×2 + 65×3 + 70×5) ÷ (2 + 3 + 5)

= (176 + 195 + 350) ÷ 10

= 721 ÷ 10

= 72.1%