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Base Converter
Convert between base 2, 8, 10, and 16 in one view.
Favorite it to find it fast on home
When to use it
255 → 11111111 (binary), FF (hex)
1000 → 3E8 in hex
'Hi' → 01001000 01101001 in UTF-8
How to use it
1Step 1Fill in the values
2Step 2Change a value and the result updates instantly
3Step 3Save or copy the result
If the result looks off
The result looks wrong
Check the units and the baseline first. Changing a value updates the result instantly.
I want the starting values back
Press reset to return to the initial state.
Frequently asked questions
Are 0x/0b prefixes OK?
Yes. 0x, 0o, and 0b prefixes are recognized automatically.
Does it handle decimals or negatives?
This converter is for integers. A decimal value only converts its integer part, so check the result.