Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal in real time.
Quick Reference (0-15)
| Dec | Bin | Oct | Hex |
|---|---|---|---|
| 0 | 0000 | 0 | 0 |
| 1 | 0001 | 1 | 1 |
| 2 | 0010 | 2 | 2 |
| 3 | 0011 | 3 | 3 |
| 4 | 0100 | 4 | 4 |
| 5 | 0101 | 5 | 5 |
| 6 | 0110 | 6 | 6 |
| 7 | 0111 | 7 | 7 |
| 8 | 1000 | 10 | 8 |
| 9 | 1001 | 11 | 9 |
| 10 | 1010 | 12 | A |
| 11 | 1011 | 13 | B |
| 12 | 1100 | 14 | C |
| 13 | 1101 | 15 | D |
| 14 | 1110 | 16 | E |
| 15 | 1111 | 17 | F |
How to Use Number Base Converter
Enter a number
Type a number in any of the four fields - binary, octal, decimal, or hex.
See all bases instantly
The other three fields update automatically as you type.
Copy any result
Click the copy icon next to any field to copy that value.
About the Number Base Converter Tool
Convert numbers between binary, octal, decimal, and hexadecimal in real time. This free online number base converter from BuildQuill runs entirely in your browser. No data is sent to any server, keeping your information private. No signup or installation needed.
- Free to use with no account required
- Works in all modern browsers
- All processing happens locally in your browser
- Part of BuildQuill's converter tools collection
Frequently Asked Questions
What number systems are supported?
Can I click an output field to use it as input?
Are negative numbers supported?
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