Master number systems with interactive converters, ivX conversion processes. Learn binary, octal, decimal, and hexadecimal systems.
Number systems are mathematical notations for representing numbers using digits or symbols. Different bases provide different ways to express the same numerical value.
Digits: 0, 1
Example: 1011₂ = 11₁₀
Used in: Computer systems, digital electronics
Digits: 0, 1, 2, 3, 4, 5, 6, 7
Example: 13₈ = 11₁₀
Used in: Unix permissions, compact binary representation
Digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Example: 11₁₀
Used in: Everyday mathematics, human counting
Digits: 0-9, A, B, C, D, E, F
Example: B₁₆ = 11₁₀
Used in: Memory addresses, color codes, programming
| Dec | Bin | Oct | Hex |
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Enter a number and select its base to convert to all other bases:
See how the conversion is performed:
Click on bits to toggle them and see the decimal value change:
Understanding positional notation:
Perform arithmetic operations in binary:
Test your conversion skills with timed challenges:
Correct: 0 | Wrong: 0