Percent Error Calculator Online

Explanation

Percentage error is a measurement of the discrepancy/difference between an observed value and a true value, or accepted value. Data measurement results typically differ from the true value. Various factors, such as human error, estimation errors, and the limitations of the measurement tools themselves, might lead to mistakes. In any case, figuring out the % inaccuracy in situations like these can be helpful. Calculating percentage error involves using the absolute error, which is just the difference between the observed and the real value. After the absolute error has been divided by the true or real value, the percentage error is calculated by multiplying the relative error by 100. Clarification below using equation

Manual Calculations

• Suppose we have a true value 55 and observed value 53.
• The percent error is simply calculating by subtracting observed value from true value and divide it by true value and the multiply the whole result with 100.
• Percentage Error=100 *
  | 55 - 53 | / 55
  = 3.64%

How to use Percent Error Calculator?

• Enter the true value in the true value input field.
• Enter the observed value in the observed value input field.
• Then press the submit button.
• The results will appear in the result section (Percent Error) automatically.

More Calculation Examples (how to calculate percent error)

• Percent Error Example 1
• True Value: 34
• Observed Value = 56
• Percent Error = 100 *
  | 34 - 56 | / 34
  = 64.71%
• Result = 64.71%


• Percent Error Example 2
• True Value: 76
• Observed Value = 45
• Percent Error = 100 *
  | 76 - 45 | / 76
  = 40.79%
• Result = 40.79%


• Percent Error Example 3
• True Value: 87
• Observed Value = 63
• Percent Error = 100 *
  | 87 - 63 | / 87
  = 27.59%
• Result = 27.59%