Number Base Converter

What is a Number Base Converter?

A number base converter translates a value between binary, octal, decimal and hexadecimal. Fontily's takes a number in any base and shows all four representations at once, so conversions like hex to decimal or decimal to binary are instant.

Features

• Four bases — binary, octal, decimal and hexadecimal.
• Enter once, see all four results.
• Input validation with clear errors.
• One-click copy of each value.
• Free and private — runs in your browser.

How to Use the Number Base Converter

1. Enter your value.
2. Choose its input base (2, 8, 10 or 16).
3. Read the binary, octal, decimal and hex results instantly.
4. Copy the representation you need.

Benefits

Programmers, students and engineers constantly switch between bases when working with colours, permissions, memory and low-level data. A converter removes the manual math and mistakes, giving correct results in every base at once.

Use Cases

• Programming and debugging (hex colours, flags, addresses).
• Computer science coursework.
• Networking and permissions (octal, binary).
• Learning number systems.

Conclusion

Fontily's Number Base Converter shows binary, octal, decimal and hexadecimal together from one input. Enter a value above and copy the base you need — free and instant.