Free Activity-on-Arrow Diagram Maker

See it work

Activity-on-arrow diagram examples.

Same tool, four requests. Every drawing below is a real render.

What you type

Create an activity-on-arrow diagram for a clinic renovation: survey rooms, approve the layout, order fixtures, clear rooms, install wiring, then reopen the clinic.

Then tryAdd a two-day inspection before reopening.Change fixture ordering to take twelve days.

PERT / CPM network & Gantt chart: Clinic renovation

PERT / CPM network & Gantt chart · PMI PMBOK 7 + Moder 1983 (AON/PDM) · schematex-pert

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The drawing

What an activity-on-arrow diagram is.

An activity-on-arrow, or AOA, diagram places each activity on an arrow. The circles or nodes are events: points reached when incoming work is complete.

AOA is an older project-network convention that is useful when the event milestones matter. In activity-on-node diagrams, the activities are boxes instead.

Standard: PMI PMBOK 7 + Moder 1983 (AON/PDM)
Also follows: Gantt 1910
Engine: schematex-pert
Editable: Double-click text, drag nodes
Export: SVG · PNG · PDF

PERT / CPM network & Gantt chart: What an activity-on-arrow diagram is

Who uses it

Who uses activity-on-arrow diagrams.

Facilities planners

Map renovation work that must converge before a building reopens.

Laboratory teams

Coordinate equipment, site work and commissioning before a lab goes live.

Hospitality teams

Sequence equipment, staff and counter preparation before opening day.

How it works

How to make an activity-on-arrow diagram in three steps.

Describe it

One paragraph is enough to start.

“Create an activity-on-arrow diagram for a clinic renovation: survey rooms, approve the layout, order fixtures, clear rooms, install wiring, then reopen the clinic.”