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Binary to Decimal Converter

Paste any binary value and get its decimal equivalent instantly.

Decimal255

How to read the result

Each bit is weighted by a power of two from right to left and summed, producing the base-10 value.

Example

11111111 → 255

FAQ

Does it accept the 0b prefix?

Yes. 0b11111111 and 11111111 both work. Spaces and underscores are ignored.

Is my input sent anywhere?

No. All conversion runs in your browser.