C# to VB.NET Converter

Convert C# code to VB.NET syntax in your browser. To go the other direction, convert VB.NET back to C#. Pair with the SQL Formatter for migrating database queries too. in your browser. Handles classes, methods, properties, constructors, loops, conditionals, LINQ, and common patterns. No upload required — nothing leaves your device.

Developer Tools Cluster

🔄XML to JSON 🔄JSON to XML ✨JSON Formatter ✅JSON Validator📋XML Validator 🔐Base64 Encode/Decode 🗄️SQL Formatter 📝Markdown Preview ⚙️C# to VB.NET ⚙️VB.NET to C#
C# Input
📄 Drop a .cs file here, or
VB.NET Output

What This Tool Does

Converts C# source code to equivalent VB.NET syntax directly in your browser — no upload, no registration. Handles class declarations, properties, LINQ queries, async/await, generics, and common patterns.

Who This Is For

  • .NET developers who find C# examples online and need VB.NET equivalents for existing projects
  • Teams maintaining legacy VB.NET codebases who need to port new C# utilities
  • Students learning both .NET languages by comparing idiomatic syntax side by side
  • Consultants migrating older enterprise VB.NET applications toward modern patterns

Example: Input: A C# class with constructor, properties, and async methods → Output: Equivalent VB.NET code with correct Dim declarations, Sub/Function signatures, and Await syntax

C# vs VB.NET Syntax Reference

C# SyntaxVB.NET Equivalent
// comment' comment
/* block comment */' VB uses line comments only
using System;Imports System
namespace MyApp { }Namespace MyApp ... End Namespace
public class Foo { }Public Class Foo ... End Class
public void Method() { }Public Sub Method() ... End Sub
public string Method() { }Public Function Method() As String ... End Function
string name = "Alice";Dim name As String = "Alice"
var x = 42;Dim x = 42
if (x > 0) { } else { }If x > 0 Then ... Else ... End If
for (int i = 0; i < 10; i++)For i As Integer = 0 To 9 ... Next
foreach (var item in list)For Each item In list ... Next
while (condition) { }While condition ... End While
try { } catch (Exception e) { }Try ... Catch e As Exception ... End Try
$"Hello {name}"$"Hello {name}" (VB 14+) or String.Format
public int Age { get; set; }Public Property Age As Integer
&&, ||, !AndAlso, OrElse, Not
==, !==, <>
nullNothing
true, falseTrue, False
new List<string>()New List(Of String)()
List<T>, Dictionary<K,V>List(Of T), Dictionary(Of K, V)
return value;Return value
throw new Exception("msg")Throw New Exception("msg")

C# and VB.NET Conversion Tools

Convert code in both directions and access the migration guide:

Related Tools

Related Guides

Guide

C# vs VB.NET: Key Syntax Differences Every Developer Should Know

A side-by-side comparison of C# and VB.NET covering classes, methods, generics, LINQ, and async/await.

 Tutorial

Migrating a VB.NET Project to C#: What to Watch Out For

Common pitfalls when converting legacy VB.NET codebases to C#, including late binding, optional parameters, and On Error handling.

 Guide

JSON vs XML vs CSV: Which Data Format Should You Use?

A practical breakdown of when to reach for JSON, XML, or CSV — with real-world API and data pipeline examples.

Frequently Asked Questions

How accurate is the conversion?▼
The converter handles the most common C# patterns — classes, methods, properties, constructors, loops, conditionals, type declarations, generics, and exception handling. Complex patterns like multi-line lambdas, expression-bodied members, custom attributes, and preprocessor directives may need manual adjustment after conversion. Always review and test the output.
What is the main structural difference between C# and VB.NET?▼
C# uses curly braces {} to delimit code blocks. VB.NET uses explicit End keywords — End Class, End If, End Sub, etc. VB.NET also distinguishes between Sub (void method) and Function (method with return value), while C# uses a single void keyword or return type for both.
Does VB.NET support string interpolation like C#?▼
Yes, from VB.NET 14 (Visual Studio 2015) onwards, VB.NET supports the same $"Hello {name}" interpolation syntax as C#. For older projects targeting earlier versions, String.Format("Hello {0}", name) is the equivalent.
How do C# generics translate to VB.NET?▼
C# uses angle brackets for generics: List<string>. VB.NET uses Of inside parentheses: List(Of String). The converter handles this for common types like List, Dictionary, IEnumerable, and Task.
What about LINQ — does it work the same in both languages?▼
LINQ method syntax (.Where(), .Select(), etc.) is identical in both languages. VB.NET also supports query syntax with slightly different keywords — for example, From x In list Where x > 0 Select x instead of C#'s from x in list where x > 0 select x. Method syntax is generally safer when converting.
Can I convert VB.NET back to C#?▼
Yes — use our VB.NET to C# Converter for the reverse direction.