# JSON to TypeScript Converter

> Generate TypeScript interfaces, Zod schemas, Go structs, Python dataclasses or Rust structs from JSON.

To generate TypeScript from JSON, paste a sample payload above and an interface is inferred from its shape, including nested objects and arrays. The same tool also emits Zod schemas, Go structs, Python dataclasses, Rust serde structs and Kotlin data classes from the same input.

**URL:** https://convertto.tech/t/json-to-typescript
**Category:** Data & Format Tools (https://convertto.tech/c/data-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Enter or paste your json.
2. Enter or paste your root type name.
3. Choose the generate.
4. The result appears immediately — copy or download it.

## FAQ

### How are optional fields handled?

Types are inferred from a single sample, so every key present becomes required. If a field can be absent, mark it optional yourself after generating — one example cannot tell the difference between "missing" and "not in this record".

### What happens with arrays of mixed types?

The first element determines the element type. For genuinely heterogeneous arrays you will want a union type, which needs to be written by hand.

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