The PSL Uncertainty Calculator is developed by the Primary Standards Lab at Sandia National Laboratories to calculate the combined uncertainty of a system of multiple input parameters.
In general, a measurement value is calculated from a function of several input measurements: Y = f(x1, x2, x3…). Each input X value has a measured value and associated uncertainty. This calculator will determine the total uncertainty in the output quantity Y. Two approaches are used, the Kline-McClintock uncertainty approximation as described in the Guide to Expression of Uncertainty in Measurements (GUM), and a Monte-Carlo method.
Source: Uncertainty Calculator | SandiaPSL.github.io
5/21/22 Update: ” The Sandia Uncertainty Calculator (Suncal) is developed by the Primary Standards Lab at Sandia National Laboratories to calculate the combined uncertainty of a system of multiple input parameters.”
