error percent calculator

enter the value and click "calculate", the calculation result will be displayed.

approximate/measured values:
exact/actual value:

calculation result:

error percentage:
non-absolute error percentage:
absolute error:
what is the percentage error? percent error is a way of expressing the difference between an observed value and the true or expected value. it is often used to evaluate the accuracy of a measurement or the correctness of a calculation. the percentage error can be positive or negative, depending on whether the observed value is greater or less than the expected value.
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