Time and work planning

Task effort forecast calculator

Assumes work can be divided across the team without dependencies, coordination overhead or bottlenecks.

Your numbers

Use the units shown. Results update as you change valid inputs.

YOUR RESULT

Assumes work can be divided across the team without dependencies, coordination overhead or bottlenecks.

THE NUMBERS, EXPLAINED

How to use this calculator.

Assumes work can be divided across the team without dependencies, coordination overhead or bottlenecks.

Start with your inputs

Enter task effort (hours), people, productive hours per person per day. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.

InputExample value
Task effort (hours)120
People3
Productive hours per person per day5

A worked example

With the example inputs above, capacity-based days is 8. Change the inputs to explore your own scenario.

Putting the example numbers into the formula

Capacity-based days
(120) ÷ ((3) × (5)) = 8

All results for the example inputs above
ResultExample answer
Capacity-based days8

How this is calculated

Capacity-based days

a ÷ (b × c)

Symbols and units
a
Task effort (hours)
b
People
c
Productive hours per person per day

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions and limits

Assumes work can be divided across the team without dependencies, coordination overhead or bottlenecks.

Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.

Questions about this tool

What does the result tell me?

Capacity-based days. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.

Why might another calculator differ?

Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Assumes work can be divided across the team without dependencies, coordination overhead or bottlenecks.

Are my inputs stored or sent to AI?

Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.

Review status

Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.

Read the quality report →