🔢Number Base Converter
Convert between binary, octal, decimal, and hex.
Convert numbers between binary, octal, decimal, and hexadecimal bases online for free.
Type a number in any field — all bases update live.
Binary
Base 2 · 0b
Octal
Base 8 · 0o
Decimal
Base 10
Hexadecimal
Base 16 · 0x
Base 32
Base 32
Base 36
Base 36
Base 64
Base 64
How to Use Number Base Converter — Step by Step
- 1Enter a number and select its current base — binary (2), octal (8), decimal (10), or hex (16)
- 2Click 'Convert' — the number is converted to all four bases simultaneously
- 3Results for binary, octal, decimal, and hexadecimal are displayed
- 4Copy any converted value
Related Tools
Popular on ToolNest
You May Also Like
Frequently Asked Questions
Is this tool completely free?
Yes. All ToolNest tools are 100% free with no signup required, no account, and no watermarks added to output files.
Are my uploaded files secure and private?
All uploads use HTTPS encryption during transfer. Files are processed on secure isolated servers and automatically deleted within 2 hours of upload.
Does this tool work on mobile phones?
Yes. ToolNest works on any modern browser on iPhone, Android, tablet, or desktop — no app download or plugin needed.
Do I need to create an account?
No. Just open the tool, upload your file, and download the result. No email, no signup, no password.