JSON Schema Converter is a free developer tool by THEJORD that runs 100% in your browser: your data is never uploaded or sent to any server. Use it right here on this page — no sign-up and no limits.
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Standard for JSON structure.
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Generate JSON Schema from your JSON data automatically
When "Add format hints" is enabled, the converter automatically detects and adds format specifications:
emailuser@example.com
urihttps://example.com
date-time2025-11-17T15:30:00Z
date2025-11-17
uuid550e8400-e29b-41d4-a716-446655440000
ipv4192.168.1.1
| JSON Type | Schema Type | Example |
|---|---|---|
| string | "string" | "Hello" |
| number (integer) | "integer" | 42 |
| number (float) | "number" | 3.14 |
| boolean | "boolean" | true |
| null | "null" | null |
| array | "array" | [1, 2, 3] |
| object | "object" | { "key": "value" } |