Understanding accuracy in experiments and measurements is essential for students, researchers, and professionals. Our Percent Error Calculator helps you quickly determine how close your experimental value is to the true or theoretical value. Just enter the observed and true values, and this tool instantly calculates the percent error using the standard formula:
Percent Error = |(Observed − True) / True| × 100.
This online percent error calculator is perfect for physics, chemistry, and math problems where you need to check measurement accuracy. It’s simple, accurate, and completely mobile-friendly — making it easy to use for school, college, or research work.