Calculate uncertainty for arithmetic operations on measured values.
Variables
Variable A
Variable B
Propagated Uncertainty
Result (R ± δR)
15±0.5385
Relative Uncertainty3.59%
Fractional Error0.0359
About this calculator
Overview
When you perform calculations with measured values, the uncertainty (error) must be propagated to the result. This calculator uses the standard quadrature formula (assuming independent errors).
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Pro Tips
Assumes uncertainties are independent and random (not systematic).
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Fun Facts
"For Addition/Subtraction, absolute errors add in quadrature."
"For Multiplication/Division, relative errors add in quadrature."
