PPM Error Calculator

Formula

To calculate the PPM error:

\[ \text{PPM Error} = \left(\frac{\text{Measured Value} - \text{True Value}}{\text{True Value}}\right) \times 10^6 \]

Where:

PPM Error is the error in parts per million
Measured Value is the value obtained from the measurement
True Value is the accurate or accepted reference value

What is PPM Error?

PPM error, or parts per million error, is a unitless measure of the accuracy of a measurement relative to a true or accepted value. It is commonly used in fields such as chemistry, physics, and engineering to quantify the precision of measurements and instruments. A lower PPM error indicates a more accurate measurement, meaning the measured value is closer to the true value.

Example Calculation

Let's assume the following values:

Measured Value = 1000 ppm
True Value = 980 ppm

Using the formula:

\[ \text{PPM Error} = \left(\frac{1000 - 980}{980}\right) \times 10^6 \approx 20408.16 \text{ ppm} \]

The PPM error is approximately 20,408.16 ppm.