Overview
All computer data is stored and processed in binary. Hexadecimal is human-readable shorthand for binary. Both are fundamental to any programming or computer science work.
The Formula
Binary: each digit is a power of 2 | Hex: each digit is a power of 16 (0-9, A-F)
Standard formula used by professionals worldwide
Worked Example
Step-by-step
42 decimal = 101010 binary = 0x2A hex | 255 = 11111111 = 0xFF
Key Concepts
- Accuracy: Results are as accurate as the inputs you provide
- Units: Always use consistent units throughout your calculation
- Verification: Double-check important calculations before making decisions
- Professional advice: For major financial, health, or structural decisions, consult a qualified professional
Privacy and Security
- All calculations run entirely in your browser
- No data is sent to any server
- No sign-up or personal information required
- Your data stays private โ always
Frequently Asked Questions
Why computers use binary?
Two natural electronic states โ current on (1) or off (0). Binary maps perfectly.
What is 0xFF?
255 decimal. The 0x prefix means hexadecimal. Used for colour values and bit masks.
What is an overflow error?
When a number exceeds the maximum value the available bits can store.