Compare a measurement with an accepted reference and see absolute error, signed error and percentage error.
Printed from Calxy · https://www.calxy.net/math/percent-error-calculator
-1000000000 – 1000000000
-1000000000 – 1000000000
Absolute percent error
2.00%
Reference-based error is different from symmetric percentage difference. Both inputs must use the same units.
Absolute error = |measured − reference|.
Absolute percent error = absolute error ÷ |reference| × 100.
Percent error = |measurement − reference| / |reference| × 100. A zero reference has no defined relative error. Both quantities must use the same unit.
A measurement of 98 against a reference of 100 has absolute error 2, signed error −2 and percent error 2%.
Percent error uses a designated reference. Symmetric percentage difference compares two values without treating either as the accepted reference.
Last updated . Results are estimates for informational purposes only.