Float/Slack Time Calculator
Advanced float/slack time analysis with critical path identification and project scheduling optimization
Maximum delay without affecting project completion
Delay without affecting successor activities
Identify critical activities with zero float
Float available regardless of predecessor delays
Project Activities & Dependencies
Ctrl+click for multiple
Ctrl+click for multiple
Ctrl+click for multiple
Ctrl+click for multiple
Ctrl+click for multiple
Understanding Float and Slack Time
Types of Float
Total Float (Slack)
The maximum amount of time an activity can be delayed without delaying the project completion date. Calculated as: Late Finish - Early Finish
Free Float
The amount of time an activity can be delayed without delaying the early start of any immediately following activities. Critical for maintaining project flow and dependencies.
Independent Float
The amount of time an activity can be delayed when all preceding activities start as late as possible and all succeeding activities start as early as possible.
Critical Path Analysis
Critical Activities
Activities with zero total float that form the longest path through the project network. Any delay in critical activities directly impacts the project completion date.
Float Management
Effective float management allows project managers to optimize resource allocation, handle uncertainties, and maintain schedule flexibility without compromising project deadlines.
Schedule Optimization
Understanding float distribution helps in resource leveling, risk mitigation, and efficient project schedule optimization for better project performance.
Float Management Best Practices
Monitor Critical Path
Focus resources and attention on critical activities to ensure project timeline adherence.
Use Float Strategically
Allocate float to high-risk activities and avoid consuming float unnecessarily.
Regular Updates
Update activity durations and dependencies regularly to maintain accurate float calculations.
Risk Assessment
Use float analysis to identify schedule risks and develop mitigation strategies.
Resource Optimization
Utilize float for resource leveling to optimize resource allocation across the project.
Communication
Clearly communicate float information to stakeholders and team members for better coordination.