Data / Number / Computer Science Tools
Binary to Decimal Converter
Convert a binary number to its exact decimal value, with the place-value calculation shown.
Enter a binary number below - this tool converts it to decimal exactly, showing the place-value breakdown.
For the reverse direction, see the Decimal to Binary Converter - or the Number Base Converter for other bases.
How Binary-to-Decimal Conversion Works
Each binary digit represents a power of 2 based on its position (rightmost = 2^0, next = 2^1, and so on) - the decimal value is the sum of the powers of 2 where a binary digit is 1.
How to Use It
- Enter a binary number (digits 0 and 1 only).
- The decimal equivalent and place-value breakdown appear instantly.
Limitations
This handles arbitrarily large binary integers accurately using BigInt - there's no binary-point/fraction support, since fractional binary values require a different (and less standardized) interpretation.
Tool Categories
SSL Tools
DNS Tools
Domain Tools
Website Tools
Security Tools
Email Tools
Performance Tools
SEO Tools
API & Developer Testing Tools
Git & GitHub Tools
DevOps Tools
Linux & System Administration Tools
Database & SQL Tools
AWS & Cloud Tools
Kubernetes Tools
Programming Language Tools
Frontend / CSS Tools
Image / SVG Developer Tools
Security & Authentication Tools
File & Data Conversion Tools
Data / Number / Computer Science Tools