Number Base Converter
Convert between binary, octal, decimal, and hexadecimal in real time.
Decimal value: 255
Binary (Base 2)
11111111
Octal (Base 8)
377
Hexadecimal (Base 16)
FF
Quick Reference
| Dec | Bin | Oct | Hex |
|---|---|---|---|
| 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 |
| 8 | 1000 | 10 | 8 |
| 10 | 1010 | 12 | A |
| 15 | 1111 | 17 | F |
| 16 | 10000 | 20 | 10 |
| 32 | 100000 | 40 | 20 |
| 64 | 1000000 | 100 | 40 |
| 128 | 10000000 | 200 | 80 |
| 255 | 11111111 | 377 | FF |
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Number Base Converter really free?
Yes. Number Base Converter is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Number Base Converter upload my data?
No. Number Base Converter runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Number Base Converter is ready to use on desktop or mobile.
Does Number Base Converter work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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