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Productivity Calculator
Estimate duration and labour cost from a user-defined output rate.
Project & Input Data
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A rate measured on your site or agreed with the subcontractor — no standard rate is assumed.
USD
Engineering Assumptions
- Days are effective working days; holidays, weather stoppages and trade interference are excluded.
- The cost covers labour only — materials, equipment and overheads are excluded.
- All percentages and inputs are user-defined; the calculation is purely arithmetic and assumes no particular code or specification.
Formula Summary
- Crew daily output = crew size × output per worker
- Duration = quantity ÷ crew daily output
- Crew-days = ceil(duration) × crew size
- Labour cost = crew-days × daily rate
Results
Enter your data and press Calculate to see the results.
Engineering Insight
Unit labour cost is the right comparison metric: a bigger crew shortens the duration but only lowers unit cost if output per worker also improves.
Recommended Action
Track actual output weekly, update the entered rate, and re-run the duration before committing to the programme.
Next step
This calculator is fully usable as it is. Professional adds saved projects, calculation history and PDF/Excel reports; Premium adds the integrated workflows and the BOQ generator.