Choose the base of your number and type it in. You get it in binary, octal, decimal and hexadecimal at once — even very large numbers.
Last updated: · By Furkan Çetinkaya · About & Methodology
Binary (base 2)
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Show the working
Each base uses its own digits: binary 0–1, octal 0–7, decimal 0–9 and hexadecimal 0–9 and A–F. Each position is worth the base times the position to its right.
Binary is grouped in fours for easy reading; each group of four bits is one hexadecimal digit.
1111 1111 — and FF in hexadecimal.
Yes, prefixes 0x, 0b and 0o are ignored.