Create flowcharts online, step by step, then press Run and watch them work. B4Coder is a flowchart maker for students and teachers who use flowcharts to plan programs: every flowchart you make is a program you can test, and turn into real code.
A flowchart is a plan drawn as boxes and arrows: each box is one step, and the arrows show the order. A flowchart maker is the tool you build it in, so you can move steps around, fix them and keep your work, instead of redrawing it on paper.
Flowchart makers come in two kinds. Diagram tools draw any process, from a company's workflow to a recipe. B4Coder is the other kind: it's made for programming. Its blocks are the steps a program takes (ask a question, remember a value, make a decision, repeat), so the flowchart isn't just a picture of your logic: it is your logic, and it runs.
A first flowchart takes about five minutes. Here's the order you'd do it in.
Open the editor: a Start block is waiting. Tap Ask to add a question after it, or drag any block onto the canvas.
Arrows connect the blocks in the order they happen. Drag from one block's dot to the next, or press + on an arrow to slip a step in between.
Press Run and the flowchart works: it asks its questions, makes its decisions and shows its answers, one glowing block at a time.
View Code shows the same flowchart as Python, Java, C++, C# or JavaScript, line for line, ready to copy.
Try one right here: this flowchart asks for an age and decides. Press Run.
Build → Run → See
your logic come alive!
Flowchart
Run Result
It's a flowchart maker that works in your browser: in the lab, at the hostel or at home, on Windows, Mac, Linux or a Chromebook. Nothing to download, nothing to set up.
Most flowchart software draws shapes. Here each block does its job, so a mistake shows up the moment you press Run, and FlowBot explains, in plain words, what happened at each step.
One click switches to the shapes textbooks use: ovals, parallelograms, rectangles, diamonds and hexagons. Or keep B4Coder's labelled blocks while you learn.
Sign in (free) to keep your flowcharts in your account and open them on any computer. Share with a Link sends a read-only copy that anyone can open and change for themselves.
Once a flowchart works, its code is the easy part. Open View Code and the same program appears in five languages, each line matching a block. See how each block becomes code on Flowchart to code, or how flowcharts teach each idea of programming on Flowchart programming.
Students use it to plan and test their logic before writing code, and to practise with lessons, examples and challenges. Teachers use it in class and in the lab, with student logins, classes and challenges they can set. Read more in a flowchart maker for students and B4Coder for schools and colleges.
Yes, it's free to start. Open the editor and build: no account is needed to make and run a flowchart. Sign in (also free) to save your flowcharts and open them on another computer.
Yes. Press Standard symbols on the canvas: input and output become parallelograms, steps become rectangles and loops become hexagons, with ovals for Start and End and a diamond for each decision, as in most textbooks.
It works in any modern browser, on a laptop, desktop, tablet or phone. A bigger screen is easier for long flowcharts, so most students use a laptop or the college lab.
“Everyone can learn to program. It just takes the right tools.” Your first program is about a minute away, and it's free.