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Number Base Converter
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) - instantly and locally.
Private - runs in your browser
No signup required
Free forever
How to use Number Base Converter
- Type a number into any field.
- See it converted into the other bases at once.
- Copy the value you need.
Features
- Binary, octal, decimal, hex
- Live conversion
- Validates input
Why use it
- Quick reference for low-level work
- Embedded systems, networking, color codes
Frequently asked questions
How big can the number be?
Up to JavaScript safe integer (2^53 - 1). Larger values may lose precision.