ScanSpotBase Converter
Convert numbers between bases.
BIN / OCT / DEC / HEXLive conversionProgrammer friendly
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🔢 Number Base Converter
Convert numbers between binary, octal, decimal, and hex.
Convert a number between binary, octal, decimal and hexadecimal, and see all four representations at once.
How to use the Base Converter
- Type a number into any of the four fields.
- The other three update instantly.
- Copy the representation you need.
Why people use it
- Faster than converting by hand when you are reading a memory dump, a permission mask or a colour value.
- Shows all four bases together so you can check your work at a glance.
- Handles negative values and values wider than 32 bits.
Frequently asked questions
How is binary read?
Each digit is a power of two, counted from right to left. So 1011 is 8 + 0 + 2 + 1, which is 11 in decimal.
What is hexadecimal used for?
It is a compact way to write binary, because one hex digit covers exactly four bits. That is why memory addresses, colour codes and hash digests are usually shown in hex.
Why do Unix file permissions like 755 look like octal?
Permissions are three groups of three bits, and octal represents exactly three bits per digit. So 755 means rwxr-xr-x.