- Choose one reporting period, cohort, currency, and unit system before entering values.
- Enter the required figures for Flow Time Estimator. Measure from the same start event to the same finish event and include waiting time.
- Review the primary result, then inspect the supporting values rather than relying on the headline number alone.
- Change one assumption at a time to compare a conservative, base, and optimistic case.
- Save the input definitions with the result so the calculation can be reproduced later.
Flow Time Estimator
The Flow Time Estimator provides a structured estimate of flow time from the inputs that most directly drive it. It is useful for planning, comparisons, and sensitivity checks when an exact observed value is not yet available.
Calculator inputs
hrs
min
times
min
sessions
/10
Result
—
Calculated result
Enter your values and calculate.
A practical recommendation will appear here.
Net flow time—
Flow efficiency—
Interruption cost—
Status—
Average flow time = Total elapsed time for completed items ÷ Number of completed items
Use consistent periods and units throughout the calculation. When rates are entered as percentages, convert them to decimals for arithmetic unless the interface performs that conversion automatically.
What the result means
It converts the entered assumptions into a consistent estimate of flow time. The result is most useful for comparison and planning when every input covers the same scope.
Use the median or percentiles alongside the average when a few delayed items distort the result. Recalculate when the underlying inputs change, and use source records rather than memory for material decisions.
Five jobs spend a combined 36 hours in the process, so average flow time is 7.2 hours per job.
The example illustrates the mechanics only. Replace every example value with data that reflects the user’s actual period, account, policy, or scenario.
What does the Flow Time Estimator tell me?
It converts the entered assumptions into a consistent estimate of flow time. The result is most useful for comparison and planning when every input covers the same scope.
Which input definitions matter most for this flow time calculation?
Measure from the same start event to the same finish event and include waiting time. Differences in timing, rounding, attribution, fee schedules, eligibility rules, or data definitions can materially change the answer.
What is the most important limitation of this flow time result?
Use the median or percentiles alongside the average when a few delayed items distort the result. Recalculate when the underlying inputs change, and use source records rather than memory for material decisions.
What is the right way to compare two flow time scenarios?
For a reliable comparison, keep the formula basis—Average flow time = Total elapsed time for completed items ÷ Number of completed items—constant, change only the assumption being tested, and record both the absolute and percentage difference.