Hex, decimal, octal & binary converter
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Input radix
Results
Binary
base 2
0b111111
Octal
base 8
77
Decimal
base 10
63
Hexadecimal
base 16
0x3f
ASCII
character view
?
About radix notation
Firmware registers, memory addresses and I²C/SPI opcodes are usually written in hex, while ADC counts and timer reload values are binary. The converter detects 0x / 0b / 0o prefixes and lets the prefix set the base, so pasting a value straight from a datasheet or register map works no matter which radix the selector holds. BigInt keeps 64-bit register values exact — no double-precision rounding above 2⁵³. Byte and word boundaries still matter, so keep the register width in mind when converting.
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