Convert Number Base
Enter a number above to see conversions
🎯 Custom Base Conversion
Try These Examples
About Number Bases
What is a Number Base?
A number base (or radix) determines how many unique digits are used to represent numbers. We typically use base 10 (decimal) with digits 0-9. Computers use base 2 (binary) with just 0 and 1.
Common Number Bases
| Base | Name | Digits | Common Use |
|---|---|---|---|
| 2 | Binary | 0-1 | Computer storage, digital logic |
| 8 | Octal | 0-7 | Unix file permissions (chmod) |
| 10 | Decimal | 0-9 | Everyday counting, math |
| 16 | Hexadecimal | 0-9, A-F | Colors (#FF0000), memory addresses, MAC addresses |
| 36 | Base36 | 0-9, A-Z | Short URLs, compact IDs |
Hex Color Codes Explained
CSS colors like #FF6B6B are hexadecimal:
- FF (255) = Red channel
- 6B (107) = Green channel
- 6B (107) = Blue channel
Binary & Powers of 2
| Binary | Decimal | Hex | Note |
|---|---|---|---|
| 1 | 1 | 1 | 2⁰ |
| 10 | 2 | 2 | 2¹ |
| 100 | 4 | 4 | 2² |
| 1000 | 8 | 8 | 2³ |
| 10000 | 16 | 10 | 2⁴ |
| 100000 | 32 | 20 | 2⁵ |
| 1000000 | 64 | 40 | 2⁶ |
| 10000000 | 128 | 80 | 2⁷ |
| 11111111 | 255 | FF | Max byte value |
Precision Note
This tool uses JavaScript's number parsing. For extremely large numbers (beyond 2⁵³ - 1), precision may be lost. For cryptographic or arbitrary-precision needs, use a specialized big-integer library.
Privacy & Limitations
- All calculations run entirely in your browser -- nothing is sent to any server.
- Results are computed using standard formulas and should be verified for critical applications.
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Base Converter FAQ
What is Base Converter?
Base Converter is a free digital & computing tool that helps you Convert numbers between bases 2 and 36.
How do I use Base Converter?
Enter your input values, review the calculated output, and adjust inputs until you reach the result you need. The result updates in your browser.
Is Base Converter private?
Yes. Calculations run locally in your browser. Inputs are not uploaded to a server by default, and refreshing the page clears session data.
Does Base Converter require an account or installation?
No. You can use this tool directly in your browser without sign-up or software installation.
How accurate are results from Base Converter?
This tool applies standard formulas or deterministic processing logic for estimates. For medical, legal, tax, or investment decisions, verify with a qualified professional.
Can I save or share outputs from Base Converter?
You can bookmark this page and copy outputs manually. Results are not persisted in your account and are typically not embedded in the URL.