Can I enter negative numbers?

Currently the tool supports non-negative integers only.

How do I read a hexadecimal number?

Hex uses digits 0–9 and letters A–F (case-insensitive). For example, "FF" equals 255 in decimal.

Why is "0x" shown before hex results?

"0x" is the standard programming prefix that indicates a hexadecimal number, used in C, JavaScript, Python, and most other languages.

Number Base Converter

Converters· 6 tools

Free online number base converter. Convert any number between decimal (base 10), binary (base 2), hexadecimal (base 16), and octal (base 8). Results update instantly as you type. Essential tool for programmers and computer science students.

Input Base

Decimal (Base 10)

Frequently Asked Questions

References

Number — MDN JavaScript reference — MDN Web Docs

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Frequently Asked Questions

References and sources

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