Construction & estimating · Cost & planning

Labour productivity & crew cost calculator

Man-hours, crew days, labour cost with on-costs, plant cost and unit rate for an activity.

Standard: Quantity / output rate · crew size · on-costs

Inputs in the worked example

The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.

Input	Value	Unit
Quantity	450	units
Output per worker-hour	1.8	units/h
Crew size	4
Hours per day	8	h
Hourly rate	58	$/h
On-costs (super, insurance, leave)	30	%
Plant per day	650	$

Diagram for the worked example

Hours = quantity / output; duration = hours / crew / hours per day
Rates are example inputs only. Replace them with current supplier quotes and local labour rates.

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For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.