Absolute Uncertainty Calculator

Enter the relative uncertainty and the measured value of a data point into the calculator to determine the absolute uncertainty.

Absolute Uncertainty Formula

The following formula is used to calculate an absolute uncertainty.

A = R /100 * MV

  • Where A is the absolute uncertainty
  • R is the relative uncertainty
  • MV is the measure value

FAQ

What is absolute uncertainty?

The absolute uncertainty is a value that provides a range of possible values when combined with a measured or reported value. In other words, if the measured value is 2 and the absolute uncertantainty is .5, then the range of possible values is 1.5-2.5 or 2+/- .5 .

What is relative uncertainty?

Relative uncertainty is the ratio of the absolute uncertainty to the measured value.


Absolute Uncertainty Example

How to calculate absolute uncertainty?

  1. First, determine the relative uncertainty.

    Calculate the relative uncertainty.

  2. Next, determine the measured value.

    Calculate the measure or reported value.

  3. Finally, calculate the absolute uncertainty.

    Calculate the absolute uncertainty using the formula above.


absolute uncertainty calculator
absolute uncertainty formula

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