What is it?
Timeline shows how long estimated effort takes with your team capacity.
Software build
Project timeline calculator
Timeline shows how long estimated effort takes with your team capacity.
Enter total person-weeks, team size, and buffer percent.
Project timeline calculator
Inputs
Results
Calendar weeks
—
Approx. months
—
Guide
From effort to calendar
Why it matters
Needed for stakeholder commitments and alignment with runway and Cost of Delay.
How it works
Enter total person-weeks, team size, and buffer percent.
Formula Calendar weeks = (person-weeks ÷ team size) × (1 + buffer%)
Go deeper
Why you’ll love this
Turn estimated effort into a calendar so commitments and Cost of Delay make sense.
How to jump in
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Enter person-weeks
Total effort across roles.
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Team size and buffer
Parallel capacity plus risk percent.
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Read the calendar
Approx. weeks and months to delivery.
What you walk away with
- Effort to calendar
- Built-in buffer
- Links to Cost of Delay
- Clear guide
Where it shines
Stakeholder dates
Give more realistic commitments.
Delay tradeoffs
Pair with Cost of Delay.
Sprint planning
Check capacity before promising.
Quick answers
What is a person-week?
One person working one full week — total effort, not calendar weeks.
How are months estimated?
Calendar weeks divided by about 4.345.