Binary / Hex Converter
Convert between binary, decimal, octal and hexadecimal.
- Instant
- 100% free
- Mobile ready
- No signup
DEC255
BIN11111111
OCT377
HEXFF
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How it works
Examples
- 255 = 0xFF = 11111111₂
- 1010₂ = 10 = 0xA
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Accuracy & sources
How this tool is built and verified.
- Source
- Standards-aligned factors
- Last reviewed
- Q2 2026
- Status
- Verified
Governing standards
- International System of Units (SI)BIPM — Bureau International des Poids et Mesures · The International System of Units (SI Brochure), 9th edition
- Standards aligned
- Formula verified
- Editor reviewed
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