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THE FEUTEX TOOLKIT

Clock Drift over an Interval

Estimate worst-sign relative timestamp drift for two independent frequency bounds.

Electronics workspace● Runs in your browser
01 Your input
02 Your result
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Formulaworst relative drift=(ppmA+ppmB)×10⁻⁶×time
Sources and model references

Worked example

Inputs

Clock A tolerance
20 ppm
Clock B tolerance
30 ppm
Elapsed time
3600 s

Expected results

Worst relative tolerance
50 ppm
Worst relative time drift
0.18 s

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter the labeled inputs in the indicated units.
  2. Calculate and compare every output against the stated model assumptions.

Try this example

{
  "a": 20,
  "b": 30,
  "t": 3600
}

Accuracy and scope

Static bounded frequency offsets; excludes resynchronization, aging and temperature changes. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.