Math
Percentage Error Calculator
Relative error between experimental and theoretical values as a percent.
Free to use — no sign-up or login.
Percentage error
%
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This free Percentage Error Calculator covers Relative error between experimental and theoretical values as a percent.
Percentage error measures how close a measurement is to an accepted value. Related math tools sit beside How it works, with no account required.
Using the Percentage Error Calculator
Relative error between experimental and theoretical values as a percent. Typical inputs are Experimental value and Theoretical value. How it works beside the form states the identity the Percentage Error Calculator applies.
FAQ
How do I use the Percentage Error Calculator?
Open the Percentage Error Calculator, fill Experimental value and Theoretical value, and read the result. Divide the absolute difference by the absolute theoretical value, then scale by 100.
What formula does the Percentage Error Calculator use?
The Percentage Error Calculator uses the identity in How it works. In words: Divide the absolute difference by the absolute theoretical value, then scale by 100.