Total Float

The maximum time an activity can start later or take longer, relative to its early start, without pushing the overall project finish date or breaking any imposed schedule constraints.

Key Points

  • Indicates schedule flexibility that does not change the project's completion date or violate constraints.
  • Calculated as LS - ES or LF - EF in the network schedule.
  • Activities on the critical path typically have zero total float; negative float signals the plan cannot meet a required date.
  • Float on a path is shared by its activities; using it on one activity reduces what is available to others on the same path.

Example

Activity B has ES = day 5 and EF = day 9. Its LS = day 7 and LF = day 11. Total float = LS - ES = 2 days (or LF - EF = 2 days). B can start up to two days late or run two days longer without moving the project's finish or breaking a constraint.

PMP Example Question

A task shows a total float of 3 days. What does this allow the project manager to do?

  1. Delay the task by up to 3 days without affecting the project finish date.
  2. Delay the task by up to 3 days without affecting any successor's early start.
  3. Add 3 days of scope to the task without any impact.
  4. Crash the task by 3 days with no additional cost.

Correct Answer: A — Delay the task without moving the project completion date

Explanation: Total float is the time an activity can slip or extend relative to its early start without changing the project finish date or violating schedule constraints. Option B describes free float.

AI Systems with Claude, for Scrum Masters and Project Managers

Most AI pilots in project management do not fail on the model. They fail because somebody pointed the thing at a decision instead of at a task. This course is built around that distinction, and around the work that follows once you get it right.

Eight teaching sections, taught against one running project from the first lecture to the last. You watch a system get built, then you build the same one against your own sprint. Nothing here is a demo that works only on the example.

You finish with five working systems and you keep them. The sprint report machine turns your board export and standup notes into the report you currently write by hand. The retro intelligence system tells you what the team keeps saying, not just what it said this time. The stakeholder comms engine drafts the update in the register the audience expects. The backlog health monitor flags the quiet decay nobody has time to check for. The risk and dependency tracker follows the chains that actually bite.

Seventy-six working files ship with it, across four sections, so every system is built against real sprint data rather than material invented for a slide. Four sprints of retrospectives, board exports, standup notes, backlog and risk data.

Explore the Course


Launch your Agile career!

HK School of Management helps you learn Agile and Scrum with practical playbooks, AI-powered prompts, and real-world workflows for planning and delivery. Practical skills, tools, and guidance you can apply right away. Covered by Udemy's 30-day refund policy.

Learn More