Three simple steps
How to use this tool?
This free online converter translates C source code into C# in three simple steps.
- Step 1
Add your C code
Type, paste, or upload the C code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into C#.
- Step 3
Review the result
Review, copy, or download the resulting C# code from the output editor.
See it in action
Examples of C to C# conversion
These examples show C source code and the corresponding C# translation. Generated results can vary as AI models are updated.
Example 1
Is String Palindrome
Program that checks if a string is a palindrome or not.
C code
C# code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
C code
C# code
Language comparison
Key differences between C and C#
| Characteristic | C | C# |
|---|---|---|
| Syntax | C has a simple syntax with a limited number of keywords and operators. | C# has a more complex syntax with a larger number of keywords and operators. |
| Paradigm | C is a procedural programming language. | C# is a multi-paradigm programming language that supports object-oriented, imperative, and functional programming. |
| Typing | C is a statically typed language. | C# is a statically typed language with type inference. |
| Performance | C is a high-performance language that is often used for system-level programming. | C# is a high-performance language that is often used for developing Windows applications and games. |
| Libraries and frameworks | C has a limited number of libraries and frameworks compared to other languages. | C# has a large number of libraries and frameworks available, including the .NET Framework and Unity. |
| Community and support | C has a large and active community with many resources available online. | C# has a large and active community with many resources available online, including Microsoft's documentation and forums. |
| Learning curve | C has a steep learning curve due to its low-level nature and lack of abstractions. | C# has a moderate learning curve, with a syntax that is similar to other C-style languages and a large number of resources available online. |
Common questions
Frequently Asked Questions
How do I convert C to C#?
Paste your C code into the input box, confirm the languages are set to C and C#, and click Convert. CodeConvert AI analyzes your C code and generates equivalent C# code in seconds, preserving the original logic and structure.
What are the main differences between C and C#?
C and C# 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 C# equivalent. See the comparison table below for the key differences between C and C#.
Is the converted C# code accurate?
The AI produces high-quality C# code that preserves the behavior of your original C code and follows C# conventions. It handles common patterns, data structures, and idioms for both C and C#. For large or performance-critical code, review and test the C# output before using it in production.
Can I convert an entire C project to C#?
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 C#. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert C# back to C?
Yes. CodeConvert AI converts in both directions, so you can convert C# to C just as easily using our C# to C converter. Try the C# to C Converter
Is the C to C# 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 C# without an account for up to 2 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.
More free tools