Explanation

What is Percent Error?

Percent error measures how far an observed value is from an accepted value.

What this calculator does

Find percent error between an observed and accepted value.

Inputs you need

• Observed value
• Accepted value

Formula

percent error = |(observed - accepted) / accepted| x 100

Example

Observed 98, accepted 100:

• Percent error = 2%

Quick input set you can try:

• Observed value: 98
• Accepted value: 100

FAQ

1) What does this calculator help with? It helps you calculate Percent Error quickly and with consistent formulas.

2) Which formula is used? It uses the standard method shown in the formula section on this page.

3) Can I use decimal values? Yes. Decimal values are supported for most numeric fields.

4) Should I rely on this for final decisions? Use it as a practical estimate, and verify critical decisions with official documents or expert advice.