Why include a buffer percentage?

Buffer accounts for interruptions, rework, and setup overhead not captured in base estimates.

How much daily focus capacity is realistic?

Many knowledge workers sustain 3 to 5 hours of deep execution on typical workdays.

Can I use this for weekly planning?

Yes. Convert daily capacity and required days into weekly blocks for planning.

Time Block Calculator Workload estimate

Translate backlog size into realistic execution hours and estimated workdays.

Number of tasks

Average minutes per task

Planning buffer (%)

Daily focus capacity (hours)

Parallel streams

Your workload estimate will appear here.

Time Blocking FAQ

Should every task use the same duration estimate?
No. Use separate runs for short and long tasks if your backlog is mixed.

What does parallel streams mean?
It approximates how many independent work tracks can be executed at once without blocking.

How often should I recalibrate estimates?
At least weekly, based on actual completion data and newly discovered task complexity.

Related Tool

If meetings are reducing your execution capacity, run the Meeting Load Calculator before finalizing deadlines, then validate weekly capacity in the Weekly Focus Planner. Check financial runway in BudgetKit and place delivery milestones in DateKit.