⏱️ Man-Hours Calculator
Calculate total man-hours for projects
Number of people working
Hours each worker will work
How to Use This Calculator
Enter Number of Workers
Input the number of people who will be working on the project or task.
Enter Hours per Worker
Input the number of hours each worker will work. This can be total hours for the project or hours per day/week.
Calculate
Click calculate to see the total man-hours, man-days, and man-weeks.
Review Results
Use the total man-hours to plan resources, estimate costs, and schedule projects.
Formula
Total Man-Hours:
Man-Hours = Number of Workers × Hours per Worker
Man-Days:
Man-Days = Total Man-Hours / 8
Man-Weeks:
Man-Weeks = Total Man-Hours / 40
Example 1: Construction Project
10 workers, 40 hours each
Total Man-Hours: 10 × 40 = 400 hours
Man-Days: 400 / 8 = 50 days
Man-Weeks: 400 / 40 = 10 weeks
Example 2: Software Development
5 developers, 160 hours each (1 month project)
Total Man-Hours: 5 × 160 = 800 hours
Man-Days: 800 / 8 = 100 days
Man-Weeks: 800 / 40 = 20 weeks
About Man-Hours Calculator
The Man-Hours Calculator helps project managers, contractors, and businesses calculate total labor hours required for projects. This essential project planning tool multiplies the number of workers by hours worked to determine total man-hours, which is crucial for estimating labor costs, scheduling projects, and resource planning.
When to Use This Calculator
- Project Planning: Estimate total labor hours needed for projects
- Cost Estimation: Calculate labor costs by multiplying man-hours by hourly rates
- Resource Planning: Determine workforce requirements for projects
- Project Scheduling: Plan project timelines based on available man-hours
- Bid Preparation: Calculate labor costs for project bids and proposals
- Workforce Management: Track and manage labor resources
Why Use Our Calculator?
- ✅ Quick Calculation: Instantly calculate total man-hours from worker count and hours
- ✅ Multiple Metrics: Shows man-hours, man-days, and man-weeks
- ✅ Simple Input: Easy-to-use calculator with just two inputs
- ✅ Clear Results: Easy-to-understand display of labor hours
- ✅ Free Tool: No cost for essential project planning
Common Applications
- Construction: Calculate labor hours for construction projects
- Manufacturing: Estimate production labor requirements
- IT Projects: Plan development and implementation hours
- Service Projects: Estimate labor for service delivery
Tips for Best Results
- Accurate Worker Count: Include all workers involved in the project
- Realistic Hours: Use realistic hours per worker based on project scope
- Account for Overtime: Include overtime hours if applicable
- Consider Efficiency: Factor in productivity and efficiency rates
- Regular Updates: Recalculate as project scope or team size changes
Frequently Asked Questions
What is a man-hour?
A man-hour is one hour of work by one person. It's a unit of labor measurement. For example, if 5 people work 8 hours each, that's 40 man-hours (5 × 8 = 40).
How do I calculate labor costs from man-hours?
Multiply total man-hours by the average hourly labor rate. For example, if you have 400 man-hours at $25/hour, labor cost = 400 × $25 = $10,000. If workers have different rates, calculate separately for each group.
What's the difference between man-hours and person-hours?
They're the same thing. "Man-hours" is the traditional term, while "person-hours" is more inclusive. Both measure one hour of work by one person. The calculator works the same for both.
Should I include breaks and non-productive time?
It depends on your purpose. For cost estimation, you may want to include only productive hours. For scheduling, include all paid hours. Typically, use scheduled hours (including breaks) for total man-hours, but track productive vs non-productive separately if needed.
How do I account for different skill levels?
Calculate man-hours separately for each skill level or worker group, then sum them. For example, 3 senior workers × 40 hours = 120 hours, 5 junior workers × 40 hours = 200 hours, total = 320 man-hours. This helps with accurate cost estimation.
Can I use this for multiple projects or phases?
Yes! Calculate man-hours for each project phase or task separately, then sum them. For example, Phase 1: 200 man-hours, Phase 2: 300 man-hours, Total: 500 man-hours. This helps with detailed project planning.