Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal bases.

From base

Input

Output

Binary (2)

Octal (8)

Decimal (10)

Hexadecimal (16)

How to Use

1
Enter your number and select its base (binary, octal, decimal, hex, or custom).
2
View the converted values in all other bases simultaneously.
3
Copy any result with the copy button.

Convert between binary (2), octal (8), decimal (10), and hexadecimal (16) with a single input.

Enter any base from 2 to 36 for conversions beyond the standard formats.

Uses JavaScript's BigInt for accurate conversion of very large numbers without precision loss.

See all base conversions at the same time — no need to convert one pair at a time.

Binary (2), Octal (8), Decimal (10), Hexadecimal (16), and any custom base from 2 to 36.

Yes, it uses BigInt internally so you can convert very large numbers accurately.

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