JSON to TypeScript Converter
Developer ToolsGenerate TypeScript interfaces from JSON
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All history →JSON to TypeScript Converter — at a glance
Save time by generating TypeScript types straight from a sample JSON response.
How to use it — step by step
A JSON object or array, such as an API response.
Paste your input
Paste or type your content into the big input box.
Choose options
Pick the mode and options that fit what you need.
Generate Types
Press the button. The result is created instantly on your device.
Copy the result
Check the output and press Copy to use it anywhere.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
Is the output always perfect?+
It is inferred from your sample, so check it. A field that was always a number in your sample may be a string in other data.
What about null values?+
A null value becomes the type null. Combine it with the real type if the field can be both.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.