CalcHub
Base Converter
Convert between binary, octal, decimal and hexadecimal.
Each digit position represents base^position. Example: FF₁₆ = 15×16 + 15 = 255₁₀.
- Why is hexadecimal used in computing?
- Hex groups binary digits neatly: one hex digit equals exactly four bits (0–15), which makes byte values readable, e.g. #FF0000 for red.
- What is the largest number supported?
- Numbers up to 2⁵³ − 1 (JavaScript's safe integer limit), which covers everyday use. Larger values would lose precision.
- How do I convert decimal to binary by hand?
- Repeatedly divide by 2 and read the remainders from bottom to top. For example, 13 ÷ 2 leaves remainders 1,0,1,1 read upward as 1101.
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