Number Base Converter
Decimal, binary, octal and hex side by side, live as you type.
Type into any base, the others update. BigInt under the hood so the high bits don't round.
0x/0b/0o automatically.Runs entirely in your browser — nothing you enter is sent to a server.
Need this for real, on your stack?
These free tools are a taste of how we think. We’re a senior software team across Romania & Pakistan that ships deep technical work — platforms, infra, data and the gnarly bits in between.
Talk to our engineers →Bitwise
We also render the binary bitmap and show common interpretations (signed/unsigned, ASCII, RGB byte triplets) so masking and packing checks are quick.
Built by WeWorkWorldwide — a senior software team in Romania & Pakistan that ships deep technical work. Need this turned into something production-grade for your stack? Talk to our engineers →