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Activity-on-node diagram maker.

Describe the project activities, durations and predecessors, and get an activity-on-node diagram. Each box is an activity and each connecting arrow shows the work that must happen first.

PERT / CPM Network & Gantt ChartEnter to send

Free account, no card · Export SVG, PNG or PDF

See it work

Activity-on-node diagram examples.

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

What you type
Create an activity-on-node diagram for a community workshop: set the topic, book a room, invite a speaker, publish invitations, prepare materials, then run the workshop.
Then tryAdd a two-day attendee registration task after invitations.Change material preparation to take four days.
PERT / CPM network & Gantt chart: Community workshop
PERT / CPM network & Gantt chart · PMI PMBOK 7 + Moder 1983 (AON/PDM) · schematex-pert

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The drawing

What an activity-on-node diagram is.

An activity-on-node, or AON, diagram shows each task as a node. Arrows run from predecessor to successor, making the required order and any work that can run in parallel visible.

Project teams use the network to calculate dates and find the critical path. Unlike an activity-on-arrow diagram, the arrows mean dependencies; the activities are the boxes.

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-node diagram is
Who uses it

Who uses activity-on-node diagrams.

PERT / CPM network & Gantt chart: Project managersProject managers

Event and launch plans where booking, preparation and delivery must line up.

PERT / CPM network & Gantt chart: Facilities teamsFacilities teams

Office relocation work that keeps site and network preparation separate.

PERT / CPM network & Gantt chart: Delivery teamsDelivery teams

Sprint work that shows development, design, testing and review in order.

How it works

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

01

Describe it

One paragraph is enough to start.

“Create an activity-on-node diagram for a community workshop: set the topic, book a room, invite a speaker, publish invitations, prepare materials, then run the workshop.”
02

See the drawing

Drawn by the right engine.

PERT / CPM network & Gantt chart: Community workshop
03

Say what changes

Every edit keeps a version.

Add a two-day attendee registration task after invitations.
V2 · DRAWN FROM V1, NOTHING RETYPED
FAQ

Common questions

What is an activity-on-node diagram?

It is a project network in which every activity is a node and arrows show dependencies between activities.

What is the difference between AON and AOA?

AON puts activities in boxes and uses arrows for dependencies. Activity-on-arrow puts activities on the arrows and uses nodes for events.

What should I include in an AON diagram?

List each activity, its duration and the activities that must finish or start before it can proceed.

Can an AON diagram show parallel work?

Yes. Activities with the same predecessor can branch, and a later activity can wait until several predecessor activities are complete.

Related tools

Other drawings for the same work.

Activity-on-arrow diagram makerCritical path diagram generatorPERT chart makerActive Directory diagram makerActivity diagram makerFree AI flowchart generator

Draw your activity-on-node diagram now.

Free account, no card. Describe the activities and their dependencies to get started.

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