Hexadecimal Converter
Convert between hexadecimal and decimal/binary/octal.
Input Data
Mode
Value
Hex Str
Results
Converted value.
255
Explanatory note about the result.
十六進制 FF = 十進制 255。
At a glance:Hex digits 0–9,A–F are powers of 16. Complements base-converter and binary-converter.
Formula
value = Σ d_i × 16^i.
How to Use
- Pick a mode and enter a value.
- The tool returns the conversions.
Case Studies
FF₁₆ → 255
15·16+15 = 255.
FAQ
Why hexadecimal?
Compact and byte-aligned (2 hex digits per byte), used in colors and memory.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.