Available Time Budget Calculator
Accounts for ordinary interruptions, coordination and switching.
Estimate how much of the calendar is realistically usable.
Gross vs usable time
A calendar may contain many nominal hours that are not available for focused work. Fixed commitments are subtracted first, then the utilization factor is applied.
Use a realistic factor
The right percentage depends on the work. A role with frequent coordination may have less uninterrupted capacity than an independent block of planned project work.
ImportantResults are planning estimates produced from the values you enter. Verify any deadline, safety requirement, product wait, legal period, service life or professional requirement with the source that governs your situation.
Improve the estimate
After the task is complete, compare actual active time, waiting time and elapsed time with your inputs. Updating your own rates is one of the simplest ways to make future estimates more useful.