This page provides a percentage error calculator or app. Percent error quantifies the difference between the measured and actual values.

- Enter Measured Value - This is the measured value or result. It is also known as the observed, estimated or experimental value.
- Enter Actual Value - This is the theoretical, known, true, correct, accepted or exact value.

- Percent Error - Percent error is the absolute value of the difference of the measured value and the actual value divided by the actual value and multiplied by 100. A small error means the measured value is close to the actual value. A large error means there may be something wrong with the experiment or equipment. Note, this calculator uses the absolute value method for error calculation. The absolute value of a negative number will turn it positive.

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By Jimmy Raymond

AJ Design Software:

Technical Tools, Specifications, How to Guides, Training, Applications, Examples, Tutorials, Reviews, Answers, Test Review Resources, Analysis, Homework Solutions, Help, Data and Information for Engineers, Technicians, Teachers, Tutors, Researchers, K-12 Education, College and High School Students, Science Fair Projects and Scientists

Technical Tools, Specifications, How to Guides, Training, Applications, Examples, Tutorials, Reviews, Answers, Test Review Resources, Analysis, Homework Solutions, Help, Data and Information for Engineers, Technicians, Teachers, Tutors, Researchers, K-12 Education, College and High School Students, Science Fair Projects and Scientists