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Number Base Converter Online Free

Convert numbers between binary, octal, decimal, and hexadecimal instantly.

calculate Number Base Converter Online Free
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Programmers and computer science students frequently need to convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Our free number base converter updates all four representations simultaneously as you type — edit any field and all others update instantly. Hexadecimal output includes the 0x prefix. Binary output groups digits into nibbles (4-bit groups) for readability.

Frequently Asked Questions

What is the maximum number I can convert? expand_more
The converter works with JavaScript's safe integer range (up to 2^53 - 1). For most practical purposes this is more than sufficient.
Can I enter hexadecimal letters in lowercase? expand_more
Yes. Both uppercase (A-F) and lowercase (a-f) are accepted in the hexadecimal input field.

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