How it works
Parse digits in the source base to an integer, then repeatedly divide or mask to emit each target base representation.
How to use Number Base Converter
- Select the input base and type the number.
- View outputs in other bases simultaneously.
- Use dedicated pair converters for quick copy-paste between two bases only.
- Validate invalid digits before converting.
Worked examples
Concrete numbers and cases you can check against the tool above.
Decimal 255 everywhere
Shows binary 11111111, hex FF, octal 377 — one input for permission and color lessons.
When to use Number Base Converter
Jumping between bases by hand is slow in labs and interviews. One converter keeps bit patterns aligned when you debug flags or colors.
Common use cases
- Translate a hex color channel to decimal for CSS.
- Check Unix permission bits in octal and binary.
- CS homework verifying manual conversions.
Inputs and outputs
- Binary, decimal, octal, hexadecimal integers
- Optional prefixes like 0x
Privacy
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
Frequently asked questions
- Fractions supported?
- Most integer converters ignore fractional parts; use a floating converter if offered elsewhere.
- Negative numbers?
- Behavior depends on two’s complement settings if signed mode exists; unsigned mode may reject minus signs.
- Which single-base tools pair with this?
- Binary↔decimal, hex↔decimal, and octal↔decimal pages focus on one hop; this page shows all at once.