Skip to content

Sign in Create Learn

Think · Build · Run · Learn

Works in your browser, with nothing to install. Build and run without an account; sign in (free) to save your programs.

Start learning

Start here: learn step by step
Every block
Questions beginners ask
Examples
Story Mode
Challenges
Data Lab
Create your own
Hackathons
Open the editor

Product

Why B4Coder
How it works
For parents
Pricing
For Educators
FAQ
Presentations
Contact us

Flowcharts

Flowchart maker
Flowchart programming
Flowchart examples
For students
Flowgorithm alternative
Flowchart to code

Legal

Privacy
Terms
Refund & Cancellation

© 2026 B4Coder. Made for curious students.

Powered by TechTrise Solutions

1The lessons
2See examples
3Play Story Mode
4Take on challenges
5Create your own
6App ModeSoon

Look it up

Every block
Questions beginners ask
Symbols and functions
Flowchart to code

For college

Data Structures, by unit
Datatypes challenges

Learn
Blocks

Learn · Reference

Every block, explained

22 blocks, each with what it does, what to fill in, a program to try, and the same program as real code.

Begin

StartBegin your program

Talk

AskAsk the user for input TellShow a message

Values

Create ValueCreate a variable Change ValueUpdate a variable

Decide

DecisionMake a decision ChooseOne of many paths

Repeat

RepeatRepeat N times Repeat WhileRepeat while true CountCount 1, 2, 3…For EachEach item in a list

Lists

Change a ListAdd, change, remove

Data

Filter RowsKeep the rows that match Sort RowsPut rows in order

Data structures

StackPush, pop: last in, first out QueueJoin, leave: first in, first out

Functions

FunctionMake your own block CallRun a function ReturnFinish a function

Objects

ClassA template for objects Change a FieldChange part of an object

Finish

EndFinish your program