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Data Type Converter

Convert values between string, number, boolean, array, and object types with validation. Fix API type mismatches fast — local conversion, free, no signup.

100% Local Browser Native

How to Use the Data Type Converter

1. Enter a value of any type

Strings, numbers, booleans, arrays, or objects.

2. Pick target type

Explicit conversion, no truthiness traps.

3. Copy converted value

Use in code or payloads.

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Frequently Asked Questions

String to number?

'42' becomes 42 with float/int detection; non-numeric strings error explicitly instead of NaN surprises. Empty strings stay empty, never zero.

Truthy conversions?

'true'/'1' map true, everything else explicit — no JavaScript-style truthiness traps. Booleans convert predictably.

Arrays and objects?

JSON-parse strings into structures, stringify structures back. Circular references report instead of hanging.

Do converted values upload?

No — conversion runs locally in your browser. Data never leaves your device.

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Last updated October 2026