Schedule Variance Calculator
Advanced schedule variance analysis with SPI metrics and professional project performance monitoring
EV - PV: Measure schedule performance variance
Schedule Performance Index for efficiency tracking
Real-time schedule status monitoring and alerts
Project delay projections and recovery planning
Schedule Performance Metrics
Budgeted cost of work scheduled
Budgeted cost of work performed
Understanding Schedule Variance Analysis
Key Metrics Explained
Schedule Variance (SV)
Measures the difference between earned value and planned value. Positive SV indicates ahead of schedule, while negative SV indicates behind schedule. Critical for project schedule monitoring.
Schedule Performance Index (SPI)
Ratio of earned value to planned value. SPI > 1 indicates ahead of schedule, SPI = 1 indicates on schedule, and SPI < 1 indicates behind schedule. Essential for efficiency measurement.
Variance Percentage
Expresses schedule variance as a percentage of planned value. Provides standardized comparison across projects and helps in performance benchmarking.
Performance Analysis
Risk Assessment
SPI values below 0.85 indicate high risk of schedule delays, requiring immediate attention. Values between 0.85-0.95 suggest moderate risk with monitoring needed.
Forecasting
SPI helps forecast project completion dates and potential delays. Critical for stakeholder communication and resource planning adjustments.
Corrective Actions
Schedule variance analysis identifies when corrective actions are needed, such as resource reallocation, scope adjustments, or schedule compression techniques.
Schedule Variance Best Practices
Regular Monitoring
Calculate SV and SPI regularly to detect schedule deviations early and take timely corrective actions.
Trend Analysis
Track SPI trends over time to identify performance patterns and forecast future schedule performance.
Threshold Management
Establish SPI thresholds for triggering corrective actions and escalate when performance deviates.
Root Cause Analysis
Investigate causes of schedule variance to implement effective corrective and preventive actions.
Stakeholder Communication
Communicate schedule variance results clearly to stakeholders with actionable insights and recovery plans.
Integration with EVM
Use schedule variance analysis alongside cost variance and other EVM metrics for comprehensive project performance assessment.