C# to XML Converter
Paste C# classes or objects. Get clean XML back.
What this tool does
If you have ever had to put together an XML payload that mirrors a C# class — for a SOAP call, a config file, a WCF contract, or a test fixture — you know how much boilerplate that is. Paste the C# here and you get back well-formed XML in one pass. A single object initializer, a whole model file with several classes, or something deeply nested — same result: a complete XML document with every property preserved.
It is not dumb string-replacement. The converter knows how C# actually serializes to XML: decimal suffixes like 49.99m drop the m, DateTime and DateTimeOffset come out as ISO-8601 strings, Guid becomes a standard 8-4-4-4-12 hex string, nullables with null values become empty elements, and collections follow the same shape XmlSerializer would emit — each List<T> becomes a container element with one child per item, named after the element type.
Serialization attributes are honoured too. [XmlRoot("x")] renames the root element, [XmlElement("x")] renames a child, [XmlAttribute("x")] emits the property as an attribute instead of an element, and [XmlIgnore] drops it. [DataMember(Name="x")] on DataContract classes works the same way. If you paste several classes, each one lands in the output with nested types expanded and inherited properties rolled in. Nothing gets silently dropped.
How to use it
Three steps. Works the same whether you paste five lines or a full model file.
Paste your C# (or try the sample)
Drop your C# into the left editor as-is. An object initializer, a full class definition, multiple classes, or nested types — all fine. Click Load Sample if you want to see a realistic example first.
You do not need to strip comments, remove attributes, or clean up C# syntax. Leave the code the way it looks in your IDE. Just paste.
Hit Convert
Click the green Convert button. The tool reads the C#, preserves every class and property, and builds the XML in one pass. You will see a short loading indicator while it runs.
Copy the XML
The right panel fills with indented, well-formed XML that a standards-compliant XML parser will accept. Copy it straight into your SOAP request, config file, test fixture, or documentation.
When this actually comes in handy
Building SOAP / WCF fixtures
You have a C# request contract and need an XML body to drop into SoapUI or Postman. Paste the class, get the XML, move on.
Starting config files
A Settings class with 40 properties turns into a ready-to-edit XML template for app.config, web.config, or any XML-based config store — no handwritten boilerplate.
Keeping docs in sync
Generate XML examples for a README, API reference, or XSD-backed schema documentation straight from your actual models, so the docs match the code.
Seeding test data
Turn object initializers from your unit tests into XML seed files for integration tests, mock servers, or legacy systems that still speak XML.
Common questions
Can I paste multiple classes at once?
Yes — paste a whole file. Each top-level class comes through with nested types expanded and inherited properties from base classes included. Nothing is dropped silently.
Does it honour attributes like [XmlElement], [XmlAttribute], and [XmlIgnore]?
Yes. [XmlRoot("x")] renames the root element, [XmlElement("x")] renames a child, [XmlAttribute("x")] emits the property as an attribute on the parent, and [XmlIgnore] drops it entirely. [DataMember(Name="x")] on DataContract classes also renames the element. This matches what XmlSerializer would do.
How does it handle decimal, DateTime, Guid, and nullables?
Decimals (49.99m) lose the suffix and become plain numeric text. DateTime and DateTimeOffset come out as ISO-8601 strings. Guid is a standard 8-4-4-4-12 hex string. TimeSpan becomes an ISO-8601 duration or HH:mm:ss. Nullables with a null value become empty elements rather than being dropped — so the shape stays consistent.
What about nested classes, lists, and dictionaries?
List<T>, arrays, HashSet<T>, and IEnumerable<T> all become container elements with one child per item, named after the element type — a List<OrderItem> Items turns into <Items><OrderItem/><OrderItem/></Items>. Dictionary<K,V> becomes a container of <Entry><Key/><Value/></Entry>. Nested object initializers are expanded as nested elements with every field intact.
Is my code stored?
Your code is sent to the backend for conversion and is not persisted — we do not log the payload. As always with online tools, if the code is genuinely sensitive, look it over before pasting.
What if the C# has something unusual — methods, delegates, IntPtr?
Those are emitted as empty elements rather than failing the whole conversion, so the rest of the model still comes through. If the code itself has syntax errors, fix the obvious ones first — the parser is forgiving but not psychic.
Other tools you may need
C# to XML is one piece of the puzzle. These tools pair well with it: