Percent Error
Compare a measurement with a nonzero reference value.
Your numbers
Absolute percent error
Use consistent units. The result follows the assumptions you enter.
Scenario comparison
Up to three snapshots in this tab. Loading one replaces the current inputs.
Formula
Use E = 100abs(m−r)/abs(r). m is measured value, r is the nonzero reference in the same unit, and abs means absolute value. E is percent error.
Compare a measurement with a nonzero reference value.
Worked example
- Measured value
- 98
- Reference value
- 100
- Absolute percent error
- 2 %
- Signed relative error
- -2 %
Scope and limitations
Use consistent units. The result follows the assumptions you enter.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 9b78fb726f53 · Example checked: