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All ToolsBinary To Decimal Converter
Binary To Decimal Converter
Convert between binary, decimal, hexadecimal, and octal instantly. All four bases shown at once.
What is Binary To Decimal Converter?
Binary To Decimal is a free online number base converter. It lets you instantly convert any number between binary (base-2), decimal (base-10), hexadecimal (base-16), and octal (base-8) systems. Just type a number, select its base, and all conversions appear simultaneously.
How It Works
The tool uses JavaScript's built-in parseInt(value, fromBase) to parse the input in its source base, then calls .toString(toBase) to render the result in each target base. All computation runs entirely in your browser — nothing is sent to any server.
How to Use
- 1
Enter binary number
Type a binary number (e.g. 1010 1100) into the input field.
- 2
Convert
The decimal, hexadecimal, and octal equivalents are shown instantly.
- 3
Copy any format
Click the copy icon next to any result to copy that value.
Who Uses This Tool
💻
Programming & Debugging
Quickly verify binary values when debugging bitwise operations or reading memory dumps in low-level code.
🎨
CSS Hex Colors
Convert decimal RGB channel values to hexadecimal to build CSS color codes without mental math.
🔒
Unix File Permissions
Translate octal permission strings like 755 to binary to understand exactly which read/write/execute bits are set.
📡
Networking & Subnetting
Convert IP address octets between decimal and binary when calculating subnet masks and CIDR ranges.
🎓
CS Education
Students learning computer science can verify binary-to-decimal homework answers and explore different number bases interactively.
🛠️
Embedded Systems
Translate sensor register values between hex and binary when reading datasheets for microcontrollers and hardware protocols.
Why Choose This Tool
All Four Bases at Once
Binary, decimal, hex, and octal are all shown simultaneously so you never need to run multiple conversions.
Instant Live Conversion
Results appear as you type, eliminating the need to click a convert button for every single value.
Clear Input Validation
Invalid characters for the selected base are flagged with a helpful error message rather than silently producing wrong results.
Prefix Display
Results include standard prefixes (0b, 0x, 0o) so you can paste them directly into code without manual formatting.
Runs Entirely in Browser
No server round-trips means conversions are instantaneous and your data never leaves your device.
Large Number Support
Handles integers up to JavaScript's safe integer limit (2^53 - 1), covering virtually all practical use cases.
Key Benefits
- Converts all four common number bases at once
- Instant live conversion as you type
- Validates input and shows clear error messages
- Supports large numbers up to JavaScript's safe integer limit
- Zero dependencies — runs 100% in your browser
Frequently Asked Questions
Also Known As
binary to decimal converter onlineconvert binary to hexadecimalbinary to octal converternumber base converter binary decimal hexhow to convert binary to decimaldecimal to binary converter freehexadecimal to binary online toolbase 2 to base 10 converter
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