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JSON To HTML Table
Use the union of object keys as columns; nested values become JSON text.
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JSON to Java class Generator
Generate plain Java model classes from a JSON object or object array. Download a ZIP with separate class files, then review inferred types and add your serializer mapping.
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JSON to Kotlin Data Class Generator
Generate nested Kotlin model definitions from a JSON example. Review the inferred fields, then copy or download the source.
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JSON To Markdown Table
Use the union of object keys as columns; nested values become JSON text.
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JSON to PHP Array Converter
Generate a PHP array expression from JSON without running code.
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JSON to Protobuf Converter
Draft proto3 messages from a JSON sample. Review inferred scalar types, nested messages and numbered fields before adopting the schema in a protocol.
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JSON to Python Dataclass Generator
Infer nested Python dataclass definitions from JSON example records.
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JSON To Query String Converter
Convert a JSON object of strings or string arrays into a URL query string.
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JSON to Rust Struct Generator
Generate nested Rust model definitions from a JSON example. Review the inferred fields, then copy or download the source.
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JSON To SQL Converter
Build INSERT statements from a JSON record array using quoted identifiers and SQL string escaping.
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JSON to Swift Model Generator
Generate nested Swift model definitions from a JSON example. Review the inferred fields, then copy or download the source.
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JSON To TOML Converter
Parse a strict top-level JSON object and serialize it with the local smol-toml library.
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JSON to TypeScript interface Generator
Infer TypeScript interfaces from a JSON sample. Copy or download the nested definitions, then review optional fields and number precision against your actual API.
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JSON To XML Converter
Write a value tree with explicit type attributes and name attributes for object keys.
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JSON To YAML Converter
Parse strict JSON and serialize YAML with quoted strings and no executable tags.
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JWT Decoder
Inspect the header and payload of a compact JWT without verifying its signature.
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Kebab Case Converter
Convert ASCII identifier words to kebab-case.
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Keyword Density Checker
Match the requested Unicode word sequence case-insensitively and divide occurrences by the number of possible token windows.
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Kinematic Viscosity Converter
Convert kinematic viscosity between the listed units.
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Kinetic Energy Calculator
Translational kinetic energy in joules = mass × speed² / 2.
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