Software Cost Estimation Calculator
Estimate software development effort, cost, and schedule using the COCOMO model
Basic Parameters
Cost Drivers (Effort Multipliers)
Adjust these factors based on your project characteristics (1.0 = nominal)
Product Attributes
Hardware Attributes
Personnel Attributes
Project Attributes
Economic Parameters
Estimation Results
Effort (Person-Months)
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Development Time (Months)
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Estimated Cost
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Enter your parameters to see the project complexity assessment.
Detailed Breakdown
Your detailed cost estimation analysis will appear here.
📊 COCOMO Model Reference
| Project Type | Effort Equation (a) | Schedule Equation (c) | Typical Size | Example Projects |
|---|---|---|---|---|
| Organic | 2.4 × KLOC1.05 | 2.5 × Effort0.38 | 2-50 KLOC | Small business apps, simple systems |
| Semi-Detached | 3.0 × KLOC1.12 | 2.5 × Effort0.35 | 50-300 KLOC | Utilities, compilers, database systems |
| Embedded | 3.6 × KLOC1.20 | 2.5 × Effort0.32 | Over 300 KLOC | Real-time systems, flight control |
Note: These are the basic COCOMO equations. The calculator uses the intermediate COCOMO model with cost drivers.
📚 Software Estimation Best Practices
Accurate Size Estimation
Use function points or historical data for more accurate size estimates rather than just LOC.
Iterative Refinement
Refine estimates as project details become clearer during requirements and design phases.
Historical Data
Maintain historical data from past projects to improve future estimates.
Team Experience
Factor in your team's specific experience with the technology and domain.
Risk Management
Include contingency buffers for risks and uncertainties in your estimates.
Multiple Methods
Use multiple estimation techniques and compare results for better accuracy.
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Note: This calculator provides estimates based on the COCOMO model. Actual project costs may vary based on many factors not accounted for in this model. Use this as a starting point and adjust based on your specific circumstances.