Open Tool

Work Duration & Manhours Calculator

Estimate task durations and total manhours for tenders, BOQ pricing, and site production planning. Based on standard GCC productivity rates.

How to use
  1. Select the Nature of Work from the dropdown.
  2. The Unit and Productivity Rate are filled automatically.
  3. Enter the Total Quantity for your scope.
  4. Adjust Skilled and Unskilled Manpower to your planned crew size.
  5. Results update instantly - total duration (days) and budgeted manhours.
Settings Calculator Inputs
Based on standard GCC productivity benchmarks. Adjust for site conditions and labour skill level.
Standard GCC working day = 10 hours.
Calculated Results
Selected Activity
Total Duration
0
calendar days
Total Skilled Manhours
0
manhours (skilled)
Total Unskilled Manhours
0
manhours (unskilled/helper)
Total Combined Manhours
0
manhours (total)
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Productivity Reference
Disclaimer: Productivity rates are based on standard GCC construction benchmarks for a 10-hour working day under typical site conditions. Actual output will vary based on site access, labour skill level, environmental conditions, supervisor effectiveness, and equipment availability. These figures are intended for preliminary estimation and tender pricing purposes only. Always validate against your specific project data before committing to a programme.