Freelance Project Time Estimator
Freelance Project Time Estimator predicts project hours, efficiency, and confidence score from tasks, complexity, and buffer for effective time planning.
Formulas Used in Freelance Project Time Estimator
The calculator uses the following formulas to estimate project time:
Total Task Hours per Task Type:
Total Project Hours:
Task Completion Efficiency:
Project Completion Confidence Score:
Where:
: Total hours for a task type (hours) : Number of tasks : Average hours per task (hours) : Complexity factor (Low: 1.0, Medium: 1.5, High: 2.0) : Total project hours (hours) : Contingency buffer (decimal) : Task completion efficiency (%) : Project completion confidence score (%) : Maximum reference hours (500 hours)
Example Calculations
Example 1: Small Project, Single Task Type, Low Complexity
Input: Task Types = 1 (Tasks: 10, Hours/Task: 5, Complexity: Low), Contingency Buffer = 20%
Result: Task Type 1: 50 hours, Total Project Hours: 60 hours, Efficiency: 83.33%, Confidence Score: 88%
Example 2: Medium Project, Three Task Types, Mixed Complexity
Input: Task Types = 3 (Type 1: 10 tasks, 5 hours, Low; Type 2: 15 tasks, 8 hours, Medium; Type 3: 5 tasks, 10 hours, High), Contingency Buffer = 25%
Result: Task Type 1: 50 hours, Task Type 2: 180 hours, Task Type 3: 100 hours, Total Project Hours: 412.5 hours, Efficiency: 80%, Confidence Score: 17.5%
Example 3: Large Project, Five Task Types, High Complexity
Input: Task Types = 5 (Type 1: 20 tasks, 10 hours, High; Type 2: 15 tasks, 8 hours, Medium; Type 3: 10 tasks, 5 hours, Low; Type 4: 12 tasks, 7 hours, Medium; Type 5: 8 tasks, 6 hours, High), Contingency Buffer = 30%
Result: Task Type 1: 400 hours, Task Type 2: 180 hours, Task Type 3: 50 hours, Task Type 4: 126 hours, Task Type 5: 96 hours, Total Project Hours: 1107.6 hours, Efficiency: 76.92%, Confidence Score: 0%