C# to Protobuf Converter - Generate Protocol Buffer Schema from C# Online
Free online C# to Protobuf converter tool to generate Protocol Buffer schema files from C# class definitions with automatic type mapping.
How to Convert C# to Protobuf - Step by Step Guide
Input Your C# Class Definitions
Start by entering your C# class definitions that need to be converted to Protocol Buffer schema:
Example: C# Class Input
Here's a typical C# POCO ready for protobuf conversion:
namespace Example { public class User { public int Id { get; set; } public string Name { get; set; } public string Email { get; set; } public List<string> Roles { get; set; } public bool Active { get; set; } public UserProfile Profile { get; set; } } public class UserProfile { public string Department { get; set; } public int ExperienceYears { get; set; } public List<string> Skills { get; set; } } }
Automatic Schema Generation
The tool automatically analyzes your C# classes and generates a corresponding Protocol Buffer schema:
Example: Generated Protobuf Schema
The same C# classes, now converted to protobuf schema:
syntax = "proto3"; package example; message User { int32 id = 1; string name = 2; string email = 3; repeated string roles = 4; bool active = 5; UserProfile profile = 6; } message UserProfile { string department = 1; int32 experience_years = 2; repeated string skills = 3; }
Copy or Download Protobuf Schema
Get your generated protobuf schema ready for use! Multiple export options available:
Example: Generated Protobuf Schema
The same C# classes, now converted to protobuf schema:
syntax = "proto3"; package example; message User { int32 id = 1; string name = 2; string email = 3; repeated string roles = 4; bool active = 5; UserProfile profile = 6; } message UserProfile { string department = 1; int32 experience_years = 2; repeated string skills = 3; }
Frequently Asked Questions
Why convert C# classes to Protobuf?
Converting C# classes to Protobuf enables efficient serialization, cross-language compatibility, and is essential for building gRPC services and microservices architectures with .NET.
What C# types are supported?
This tool supports all basic C# types (string, int, long, float, double, bool), collections like List and IList (converted to repeated fields), and nested classes (converted to nested messages).
Can I convert multiple C# classes at once?
Yes! The tool automatically detects and converts all class definitions in your input, including nested classes, and generates corresponding protobuf messages.
How are C# property names converted?
C# property names (typically PascalCase) are automatically converted to snake_case following protobuf naming conventions. For example, "ExperienceYears" becomes "experience_years".
Is this C# to Protobuf converter completely free?
Yes, completely free with no file size limits, no registration required, and unlimited usage. All conversion features are available at no cost.