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Number base converter

Number, Math & UnitsClient-side

Convert numbers between binary, octal, decimal and hex.

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About this tool

Convert numbers between binary, octal, decimal and hex. This tool runs entirely in your browser using client-side APIs. Nothing you paste or upload is sent to a server.

No uploadsNo accountMore Number, Math & Units tools

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Bitwise calculator

Evaluate bitwise operations.

Two's complement calculator

Convert to and from two's complement.

IEEE 754 float inspector

Inspect IEEE 754 floating-point values.

Roman numeral converter

Convert between Roman numerals and integers.