Free C# to VB.NET Converter
How to use this tool?
This free online converter lets you convert code from C# to VB.NET in a click of a button. To use this converter, take the following steps -
- Type or paste your C# code in the input box.
- Click the convert button.
- The resulting VB.NET code from the conversion will be displayed in the output box.
Examples
The following are examples of code conversion from C# to VB.NET using this converter. Note that you may not always get the same code since it is generated by an AI language model which is not 100% deterministic and gets updated from time to time.
Example 1 - Is String Palindrome
Program that checks if a string is a palindrome or not.
C#
VB.NET
Example 2 - Even or Odd
A well commented function to check if a number if odd or even.
C#
VB.NET
Key differences between C# and VB.NET
| Characteristic | C# | VB.NET |
|---|---|---|
| Syntax | C# uses C-style syntax with curly braces to delimit blocks and semicolons to end statements. | VB.NET uses keyword-based blocks such as If...End If and Sub...End Sub, with each statement on its own line and no semicolons. |
| Case sensitivity | C# is case-sensitive, so Value and value are treated as different identifiers. | VB.NET is not case-sensitive, so Value and value refer to the same identifier. |
| Variable declaration | Variables are declared type-first, for example int count = 0;. | Variables are declared with Dim and As, for example Dim count As Integer = 0. |
| Comments | Single-line comments use // and multi-line comments use /* */. | Comments start with a leading apostrophe (') or the REM keyword. |
| Null values | The absence of a value is represented by null, with operators like ?. and ?? for null handling. | The absence of a value is represented by Nothing; modern VB.NET also supports ?. and the If() operator. |
| Object instantiation | Objects are created with the new keyword, for example var p = new Person();. | Objects are created with New, for example Dim p As New Person(). |
| Event handling | Event handlers are attached to delegates with the += operator. | Event handlers can be wired declaratively with WithEvents and the Handles keyword, in addition to AddHandler. |
| Language-specific features | C# offers features such as unsafe pointer code, static local functions, and a broader set of operators. | VB.NET offers features such as inline XML literals, optional parameters with default values, and late binding via Option Strict Off. |
Frequently Asked Questions
How do I convert C# to VB.NET?
Paste your C# code into the input box, confirm the languages are set to C# and VB.NET, and click Convert. CodeConvert AI analyzes your C# code and generates equivalent VB.NET code in seconds, preserving the original logic and structure.
What are the main differences between C# and VB.NET?
C# and VB.NET differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each C# construct to its closest VB.NET equivalent. See the comparison table below for the key differences between C# and VB.NET.
Is the converted VB.NET code accurate?
The AI produces high-quality VB.NET code that preserves the behavior of your original C# code and follows VB.NET conventions. It handles common patterns, data structures, and idioms for both C# and VB.NET. For large or performance-critical code, review and test the VB.NET output before using it in production.
Can I convert an entire C# project to VB.NET?
You can convert C# files one at a time by pasting each file's code. For a full migration, convert each file and then review how classes, dependencies, and project structure map from C# to VB.NET. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert VB.NET back to C#?
Yes. CodeConvert AI converts in both directions, so you can convert VB.NET to C# just as easily using our VB.NET to C# converter. Try the VB.NET to C# Converter
Is the C# to VB.NET converter free, and do I need to install anything?
Yes, it is free and runs in your browser with nothing to install and no IDE extension required. You can convert C# to VB.NET without an account for up to 5 conversions per day. Sign in for free for higher limits.
What are the benefits of signing in?
Signing in unlocks CodeConvert AI's Pro converter with more powerful AI models, a built-in chat assistant, code execution, saved conversion history, and personal notes. Every free account includes 5 credits and supports up to 25,000 characters of input per conversion, with no credit card required.
