JSON to TypeScript Interface Converter
Generate TypeScript interfaces from JSON data
Share:
How to Use JSON to TypeScript Interface Converter
- 1Paste your JSON data in the input area.
- 2Optionally change the root interface name.
- 3Click Convert to TypeScript.
- 4Copy the generated interfaces into your project.
About JSON to TypeScript Interface Converter
Convert JSON objects to TypeScript interface definitions instantly. Automatically generates nested interfaces, handles arrays, optional fields, and mixed types. Perfect for quickly typing API responses.
Frequently Asked Questions
Does it handle nested objects?
Yes. Each nested object automatically gets its own interface with a name derived from the property key.
How are arrays handled?
Arrays of a single type produce typed arrays (e.g. string[]). Arrays of objects generate a separate interface for the item type. Mixed arrays use union types.
Can I customize the root name?
Yes. Change the Root Interface Name field at the top before converting.
Does it handle null values?
Yes. Null values are typed as null. You may want to replace these with the actual expected type in your project.