Convert & Encode
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
Convert & Encode
Binary
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Octal
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Decimal
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Hex
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Convert numbers between bases
Enter a number in binary, octal, decimal or hexadecimal and see it in all four bases at once. It is a staple for programmers reading memory addresses, color values, permission bits and protocol data that mixes bases.
How to convert number bases
Type your number, choose which base you entered it in, and read the equivalents in binary, octal, decimal and hex.
Frequently asked questions
Does it handle very large numbers?
It is accurate up to the standard safe integer range. Extremely large values may lose precision, as they do in most calculators.