Binary to Decimal Converter
Convert binary numbers to decimal, hexadecimal, and octal. See step-by-step conversion breakdown.Updated 2026-03-16
How to Use Binary to Decimal Converter
- Enter a binary number (0s and 1s) into the input field.
- Click "Convert" to see the decimal, hexadecimal, and octal equivalents.
- Review the step-by-step breakdown showing how each bit contributes to the final value.
All processing happens locally in your browser. Your data is never uploaded to any server.
Frequently Asked Questions
How does binary to decimal conversion work?
Each digit in a binary number represents a power of 2 starting from the right. Multiply each bit by its positional value (2⁰, 2¹, 2², etc.) and sum the results to get the decimal equivalent.
What is the largest binary number I can convert?
This tool supports binary numbers up to 53 bits, which covers JavaScript's safe integer range (up to 9,007,199,254,740,991 in decimal). For most practical uses, this is more than enough.
Is the binary to decimal converter free?
Yes, completely free. No signup, no limits. All processing happens in your browser — your data never leaves your device.
"Binary to Decimal Converter." ConvKit, conv-kit.com, https://conv-kit.com/tools/binary-to-decimal/. Accessed 2026-03-16.