Conversion copied
Base Converter
Convert between Binary, Decimal, Octal, and Hexadecimal – instantly.
Number Converter
Binary (base 2)
Decimal (base 10)
Octal (base 8)
Hexadecimal (base 16)
Binary:
1010
Decimal:
10
Octal:
12
Hexadecimal:
A
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How it works
Type in any field
– Binary (0‑1), Decimal (0‑9), Octal (0‑7), or Hexadecimal (0‑9, A‑F).
Instant conversion
– the other three fields update automatically as you type.
Auto‑validation
– if you enter an invalid digit for the base, the other fields show an error.
Copy or download PDF
– save all four representations.