Man-Hours — Smart Financial Analysis
Calculate total labor hours, costs, FTE equivalent, and project timelines. Plan workforce needs and budget for construction, software, consulting, and more.
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Man-hours (or person-hours) measure total labor effort: workers × hours worked. Total Man-Hours = Number of Workers × Hours per Day × Working Days. FTE (Full-Time Equivalent) = Total Man-Hours ÷ 2,080. Man-hours measure human labor (workers × hours).
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Why: Man-hours (or person-hours) measure total labor effort: workers × hours worked. One person working one hour equals one man-hour. A standard FTE = 2,080 man-hours/year (40hr × 52...
How: Enter Number of Workers, Hours per Day, Working Days to get instant results. Try the preset examples to see how different scenarios affect the outcome, then adjust to match your situation.
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📋 Sample Scenarios — Click to Load
Project Parameters
Man-Hours by Project Phase
Cost Projection (Cumulative)
FTE Equivalent
Productivity Comparison
For educational purposes only — not financial advice. Consult a qualified advisor before making decisions.
💡 Money Facts
Man-Hours analysis is used by millions of people worldwide to make better financial decisions.
— Industry Data
Financial literacy can increase household wealth by up to 25% over a lifetime.
— NBER Research
The average American makes 35,000 financial decisions per year—many can be optimized with calculators.
— Cornell University
Globally, only 33% of adults are financially literate, making tools like this essential.
— S&P Global
Man-hours (or person-hours) measure total labor effort: workers × hours worked. The mythical man-month is real: 9 women can't make a baby in 1 month — nor can 9 developers build software in 1 month that takes 1 developer 9 months. A standard FTE = 2,080 man-hours/year (40hr × 52wk). But productive hours are only 6-7hr/day after meetings, breaks, and distractions. US construction averages $40-$80/man-hour. Software development: $100-$250/man-hour. Accurate man-hour estimation prevents budget overruns — the #1 cause of project failure.
📚 Official Sources
PMI (Project Management Institute), BLS, RSMeans, IEEE Software Engineering
📐 Man-Hours Formula
Total Man-Hours = Workers × Hours/Day × Working Days
Cost = Man-Hours × Hourly Rate
FTE = Man-Hours ÷ 2,080
🎯 When to Use Man-Hours
- • Project bidding and proposals
- • Resource allocation and scheduling
- • Budget forecasting
- • Progress tracking (earned value)
- • Productivity analysis
⚠️ Common Pitfalls
- • Assuming 8hr/day = 8 productive hours (use 6-7hr)
- • Ignoring the mythical man-month (adding people does not linearly reduce time)
- • Underestimating contingency (add 10-15%)
- • Not tracking actual vs. estimated for future projects
💡 Industry Rates (US)
| Industry | $/hr Range |
|---|---|
| Construction | $40-$80 |
| Software Dev | $100-$250 |
| Consulting | $150-$500 |
| Manufacturing | $25-$60 |
💡 Did You Know?
🎯 Expert Estimation Tips
Bottom-Up Estimation
Break work into tasks, estimate each, sum total. Most accurate but time-consuming.
Add Contingency
Add 10-15% for unknowns. Complex projects may need 20-25%.
❓ Frequently Asked Questions
What are man-hours?
Man-hours (or person-hours) measure total labor effort: workers × hours worked. One person working one hour equals one man-hour. A standard FTE = 2,080 man-hours/year (40hr × 52wk). Productive hours are typically 6-7hr/day after meetings, breaks, and distractions.
What is the man-hours formula?
Total Man-Hours = Number of Workers × Hours per Day × Working Days. With overtime: add (Workers × Overtime Hours per Day × Days). Cost = Man-Hours × Hourly Rate. FTE equivalent = Man-Hours ÷ 2,080.
How do you convert man-hours to FTE?
FTE (Full-Time Equivalent) = Total Man-Hours ÷ 2,080. One FTE = 2,080 hours/year (40 hours × 52 weeks). Example: 100,000 man-hours/year ÷ 2,080 = 48 FTE.
How do you estimate man-hours for a project?
Break the project into tasks, estimate hours per task from historical data or expert judgment, sum all task hours, then add 10-15% contingency. Use bottom-up (task-level) or top-down (analogous) estimation. Track actual vs. estimated to improve future accuracy.
How are man-hours used in project management?
Man-hours drive scheduling (duration = total hours ÷ daily capacity), budgeting (cost = hours × rate), resource allocation, progress tracking (earned value), and productivity analysis. The mythical man-month applies: 9 developers cannot build in 1 month what 1 developer builds in 9 months.
What is the difference between man-hours and machine hours?
Man-hours measure human labor (workers × hours). Machine hours measure equipment runtime. A CNC machine running 8 hours with 1 operator = 8 machine-hours but only 8 man-hours. Manufacturing often tracks both for capacity planning and cost allocation.
Disclaimer: Rates and productivity factors vary by region, skill level, and project type. Use historical data when available. Not financial or project management advice.
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