100 in Decimal
Hexadecimal 100 equals 256 in decimal.
Why this number matters: 256 is 2⁸ - the number of distinct values a single byte can represent (0-255).
100 in all number bases
Decimal256
Hexadecimal0x100
Binary0001 0000 0000
Octal400
Try another value
Edit this value or switch its base. Your changes are calculated in your browser with exact integer arithmetic.
Input base:
Decimal
256Hex
0x100Binary
0b100000000Octal
0o400How 100 converts from hexadecimal to decimal
Multiply each digit by 16 raised to its position (starting at 0 from the right), then add the results:
1× 162 = 1 × 256 = 256
0× 161 = 0 × 16 = 0
0× 160 = 0 × 1 = 0
Sum: 256
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