Gantt chart glossary
A Gantt chart looks like bars on a calendar, but the bars are the result of a few scheduling rules. Knowing their names makes a plan easier to build and easier to explain. Each entry below has its own page: what the term means, how it changes the dates, and the mistakes people make with it.
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Open the editor and type your tasks one per row, with how long each takes and what it waits for. The chart schedules itself as you type. Your work is saved automatically in your browser.
Create Your Gantt Chart FreeScheduling terms
The four ideas that decide where every bar lands.
Using them in a plan
For how to put dependencies, the critical path and milestones to work in a real project plan, QueryChart's guides go step by step.
Frequently asked questions
What do FS, SS, FF and SF mean in a Gantt chart?
They are the four dependency types: finish-to-start, start-to-start, finish-to-finish and start-to-finish. Each says which end of one task the other task is tied to. Finish-to-start is the default.
What is the difference between float and slack?
None. They are two names for the same thing: how many working days a task can slip before it delays the end of the project.
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The editor opens with a starter plan. Type your own tasks and durations, and the schedule rebuilds itself as you type. No signup required to get started.
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