Why Use This Tool?
Binary, octal, decimal, hexadecimal — four ways to write the same number, and every field of computing favors a different one. This converter takes a value in any base and shows all four representations instantly, which is faster than four mental mode switches.
The '0x' and '0b' prefixes common in code are stripped automatically, so you can paste values straight from source without cleaning them.
How It Works
- Paste or type the value.
- Choose which base you typed it in.
- Read all four representations.
Frequently Asked Questions
How do I convert binary to decimal?
Enter the binary value, choose base 2, and read the decimal result — each position doubles in value from right to left.
How do I convert decimal to hexadecimal?
Same tool: enter the decimal value with base 10 selected, and the hex form appears in the results alongside binary and octal.
Why do programmers use hexadecimal?
One hex digit maps to exactly four binary bits, so hex is a compact human-readable view of binary — the language of memory addresses, colors, and byte values.
Tips & Things to Watch
- 0x and 0b prefixes from code are handled automatically.
- Non-numeric input in the chosen base returns a clear error instead of a wrong answer.
- Large values beyond the safe integer range lose precision — this tool covers everyday sizes.