Base Converter
Convert between binary (base 2), decimal (base 10) and hexadecimal (base 16).
Input Data
要轉換的數值（依所選進位制）。
Results
10
1010
A
Converted from base 2
At a glance:Different bases represent the same integer using different radices. This tool converts among base 2, 10 and 16 using BigInt for arbitrarily large integers.
Formula
Decimal = Σ dᵢ·baseⁱ.
Convert by positional multiply / modulo.
How to Use
- Pick the source base.
- Enter the value.
- Read all three representations.
FAQ
Which letters for hex?
10–15 are A–F (case-insensitive).
Decimals supported?
This tool handles integers only; fractional parts need separate handling.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only.