Binary to Decimal
Enter a binary number (0s and 1s). Get the decimal value. Standard positional conversion from base 2 to base 10.
Convert to decimal
Enter binary digits (0 and 1) and click Convert.
How it works
Each bit is 0 or 1. Value = sum of bit × 2^position (right to left, starting at 0). Example: 101010 = 0×1 + 1×2 + 0×4 + 1×8 + 0×16 + 1×32 = 42.
When to use it
Use when learning number bases or debugging binary data.
Frequently asked questions
- Leading zeros? They do not change the value. 0011 = 11 in decimal = 3.