Number Base Converter

Base converter (Decimal ↔ Binary ↔ Hex ↔ Octal), large number breakdown (Thousand, Lakh, Million, Crore, Billion, Trillion…) and number-to-words.

No data leaves your browser
Type in any field — others update live
DecimalBase 10
BinaryBase 2
HexadecimalBase 16
OctalBase 8
From Count
DecimalBinaryHexadecimalOctal
Enter any number
NumberInteger or decimal

Frequently Asked Questions

Is this number converter free?

Yes, completely free with no signup required.

What bases are supported?

Decimal (base 10), binary (base 2), hexadecimal (base 16), and octal (base 8).

How does the live conversion work?

Type a number in any field and all other bases update instantly using JavaScript's built-in parseInt and toString methods.