Binary to Decimal Converter
Turn 0s and 1s back into a decimal number, validated as you type.
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Hex
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Octal
Each position is a power of two, so 101.1₂ = 4 + 0 + 1 + 0.5 = 5.5 in decimal.
How to use the Binary to Decimal tool
- Enter your binary to decimal in the fields above.
- Adjust any slider or type an exact number — the answer updates as you go.
- Copy the result and close the tab. Nothing you entered was sent anywhere.
About the Binary to Decimal tool
Paste a binary value (spaces for grouping are fine) and get the decimal result live, plus the equivalent hex and octal forms.
The validator only accepts 0s, 1s and one fraction point, which catches most copy-paste typos before the number causes downstream bugs.
Everything runs locally in your browser: no data is uploaded, no account is needed, and it works offline once the page has loaded.
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