Create any diagram using AI, for free
Describe what you want and FreeDiagram draws a fitting flowchart, mind map, timeline, org chart, or another diagram. Download SVG, PNG, or source with no signup; hourly fair-use limits apply.
Free · no signup · no credit card · hourly fair-use limits
25+ diagrams you can make — all free
Click any one to start with a ready-made prompt. Every type is free, hourly fair-use limited, and needs no signup.
From a sentence to a diagram in four steps
Describe it in plain English
Type what you want, however rough — a single sentence is enough to start.
We pick the diagram type
FreeDiagram reads your description and chooses the format that fits best, across 25+ types — you don't need to know its name.
Your diagram gets drawn
Your words are turned into a clean, ready-to-use diagram in seconds.
Download or tweak it
Save it as SVG or PNG, or copy the source to adjust it and draw again.
Frequently asked questions
Is FreeDiagram really free?
Yes. There is no account, credit card, watermark, or paid export. The generator uses an hourly per-IP fair-use limit to prevent automated abuse.
Do I need an account?
No login, no sign-up. Open the page, describe your diagram, and generate it. Nothing you type is saved.
What can I make?
Create flowcharts, mind maps, charts, timelines, org charts, family trees, ER diagrams, and more; FreeDiagram picks the likely format from your description.
Do I need design skills?
No. If you can describe it in a sentence, you can make it; there is nothing to drag, draw, or line up by hand.
Can I download a real SVG or PNG?
Yes. SVG stays sharp when resized, and PNG is convenient for documents and posts. You can also copy the generated diagram source, edit it, and render again.
Is the downloaded diagram fully editable?
The SVG can be opened in vector tools, and the generated source can be edited and rerendered. FreeDiagram is not a drag-and-drop canvas editor.
Is my data stored?
No. Your prompt and diagram are not saved on our servers; each request stands alone.
Can I use the diagram for work?
We do not claim ownership of the output. Review it for accuracy and ensure your prompt and included material do not infringe third-party rights.
Diagram types with their own page
Open a dedicated generator for the diagram you need — each is free, needs no signup, and uses the same hourly fair-use limit.
Free AI Mind Map Maker
Describe any topic in plain English and FreeDiagram builds a clear, structured mind map instantly — central idea, branches, and sub-branches. Free, hourly fair-use limited, no signup.
Free AI Flowchart Maker
Describe any process in plain English and FreeDiagram draws the flowchart instantly — decision branches, loops, and all. Free, hourly fair-use limited, no signup.
Free Timeline Maker
Describe any sequence of events and FreeDiagram draws a clean, professional timeline instantly — dates, milestones, and labels all arranged. Free, hourly fair-use limited, no signup.
Free Venn Diagram Maker
Describe the sets and their overlaps in plain English and FreeDiagram draws the Venn diagram instantly — intersections, exclusive regions, and labels all placed. Free, hourly fair-use limited, no signup.
Free Org Chart Maker
Describe your team or organization in plain English and FreeDiagram draws the org chart instantly — hierarchy, reporting lines, and roles all laid out. Free, hourly fair-use limited, no signup.
Free AI Fishbone Diagram Maker
Describe any problem and FreeDiagram draws the Ishikawa (cause-and-effect) diagram instantly — categories, causes, and effect. Free, hourly fair-use limited, no signup.
Free AI Decision Tree Maker
Describe any decision and FreeDiagram maps it as a tree of choices, conditions, and outcomes — free, hourly fair-use limited, no signup.
Free AI Circuit Diagram Maker
Describe any electronic circuit and FreeDiagram draws the schematic instantly — components, connections, and values. Free, hourly fair-use limited, no signup.
Free AI Logic Gate Diagram Maker
Describe any Boolean logic circuit and FreeDiagram draws the gate diagram instantly — gates, inputs, outputs, and signal flow. Free, hourly fair-use limited, no signup.
Free ER Diagram Maker
Describe your database schema in plain English and FreeDiagram draws the entity-relationship diagram instantly — entities, attributes, and relationships included. Free, hourly fair-use limited, no signup.
Free Timing Diagram Maker
Describe your digital signals or communication protocol and get a clear timing diagram in seconds. Perfect for SPI, I2C, UART, FPGA, and embedded systems documentation. No account needed.
Free Phylogenetic Tree Maker
Describe your organisms or sequences and get a publication-ready phylogenetic tree in seconds. No bioinformatics software, no account, no cost.
Free State Diagram Maker
Model what your system IS at any moment — states, transitions, guards, and events. BPMN tells you what it does; a state diagram tells you what it is.
Free Genogram Maker
Map family relationships, emotional bonds, and intergenerational patterns — no signup, no cost.
Free Ecomap Maker
Map a client's support network, identify resource gaps, and visualize relationship strengths — no signup, no cost.
Free P&ID Maker
Describe your process system and get a professional Piping and Instrumentation Diagram in seconds. No account, no software, no cost.
Free Pedigree Chart Maker
Map hereditary disease patterns, inheritance modes, and carrier status across generations — no signup, no cost.
Free Single-Line Diagram Maker
Describe your electrical power system and get a professional single-line diagram in seconds. No account, no software, no cost.
Free Ladder Logic Maker
Draft PLC programs, motor control circuits, and industrial automation logic visually — no signup, no cost.
Free Breadboard Wiring Maker
Describe your electronics circuit and get a clear breadboard wiring diagram in seconds. Perfect for Arduino projects, classroom labs, and maker tutorials. No account needed.
Free BPMN Maker
Model business processes with BPMN 2.0 — swimlanes, gateways, events, and tasks. No signup, no install, fully free.