80 in Decimal
Hexadecimal 80 equals 128 in decimal.
Why this number matters: 128 is 2⁷ - the sign bit of an 8-bit integer. As a signed byte it wraps around to -128.
80 in all number bases
Decimal128
Hexadecimal0x80
Binary1000 0000
Octal200
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Edit this value or switch its base. Your changes are calculated in your browser with exact integer arithmetic.
Input base:
Decimal
128Hex
0x80Binary
0b10000000Octal
0o200How 80 converts from hexadecimal to decimal
Multiply each digit by 16 raised to its position (starting at 0 from the right), then add the results:
8× 161 = 8 × 16 = 128
0× 160 = 0 × 1 = 0
Sum: 128
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