Uncertainty Calculator
GUM-based Type A and Type B uncertainty evaluation
Type A — Statistical Analysis
Type B — Other Sources
k=2 ≈ 95%, k=3 ≈ 99%
Enter readings and uncertainty sources, then click Calculate.
Based on GUM (Guide to the Expression of Uncertainty in Measurement)
About this calculator
- Type A: Statistical analysis of repeated observations (s/√n)
- Type B: Evaluation from specifications, certificates, or other information
- Combined uncertainty: Root sum of squares (RSS)
- Expanded uncertainty: U = k × uc