進数変換ツール

2進数、8進数、10進数、16進数の間で数値を変換します。

number base converterbinary to decimalhex to decimaldecimal to binaryoctal converterbase conversion

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Input Base

Output

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Examples

Example 1

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Example 2

FF

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Example 3

11111111

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Example 4

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Frequently Asked Questions

Q: What bases are supported?

A: Binary (2), Octal (8), Decimal (10), and Hexadecimal (16).

Q: Can I enter hex with "0x" prefix?

A: Yes, 0x prefix is automatically stripped before conversion.

Q: What is the max number size?

A: Standard JavaScript integer range (up to 2^53-1). BigInt support coming soon.

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Privacy & Security

This tool runs entirely in your browser. No data is sent to our servers. We don't store, share, or have access to any of the information you process here.