Tool · Converters
Hex to Decimal Converter
Convert delimited hexadecimal integers to decimal, or switch direction to convert decimal integers to hexadecimal.
Convert integer values
Separate values with spaces, commas, semicolons, or new lines. Hex accepts an optional 0x prefix; values are non-negative integers limited to 13 hex digits or JavaScript’s exact integer range. Up to 1,024 values and 256,000 input characters. Numeric-only tokens are interpreted as hexadecimal in this mode.
How hexadecimal converts to decimal
Hexadecimal is base 16, using digits 0–9 and A–F. Each position is a power of 16. For example, 0x2A is (2 × 16) + 10 = 42.
This converter treats each token as a non-negative integer. If a format defines 0x2A as one unsigned byte, its numeric value is 42; converting it does not establish that byte’s width, signedness, byte order, units, scale, or role in a larger file.
For byte representation and offsets, see the foundational guide. Practise reading a supplied sequence and checking its numeric notation in Byte Sequence and Offset Practice; Working with Raw ECU Files applies those ideas to a broader example.