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THE FEUTEX TOOLKIT

Integer Counter Wrap Horizon

Estimate the remaining time before an unsigned fixed-width event counter wraps.

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FormulaIncrements until wrap = 2**bits-current; Time until wrap = (2**bits-current)/rate

Made for real tasks

  • Estimate the remaining time before an unsigned fixed-width event counter wraps.
Explore step-by-step workflows →

Worked example

Inputs

Counter width
32 bits
Current count
1000000 events
Increment rate
1000 events/s

Expected results

Increments until wrap
4293967296 events
Time until wrap
4293967.296 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 counter width, current count, increment rate in the displayed units.
  2. Calculate the scenario, then compare it with measurements before changing a system.

Try this example

{
  "bits": 32,
  "current": 1000000,
  "rate": 1000
}

Accuracy and scope

Unsigned counter incrementing by one; no resets or variable rates.

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.