Hexadecimal to Decimal

Convert hexadecimal numbers to decimal numbers, supporting batch processing and multiple input formats, suitable for programming development and data processing

Bug report

Browser execution mode: Your data is processed in your browser and is not uploaded to the server.

Speed and Stability: Processing speed depends on your device and browser. For large batch work, the desktop version may be more stable.

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If the online tool fails to load or run, try the desktop tool.https://tools.yikeaigc.com/

Tool Usage

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Hex input

Supports hex numbers with or without 0x prefix

Quick actions

Batch processing

Convert multiple hex numbers at once, one per line

Decimal output

Conversion details

Input length: 0characters

Significant digits: 0bits

Max value: 0

Binary bits: 0bits

Conversion examples

Basic example: A → 10, FF → 255

With prefix: 0x1A → 26, 0xFF → 255

Large number: 1000 → 4096, FFFF → 65535

Color code: #FF0000 → 16711680

Tips

Supported formats:Supports hex numbers with 0x prefix, # prefix, or no prefix

Character range:Only 0-9 and A-F (or a-f) characters allowed

Batch processing:Enable batch mode to convert multiple numbers at once, one per line

Value range:Supports hex number conversion of any length

Instructions

Software Usage Instructions

Enter hexadecimal: Enter the hexadecimal number to convert in the "Hexadecimal Input" box. 0x prefix, # prefix, or no-prefix formats are supported.
Select mode: Click the "Batch Mode" button to switch to batch processing mode, which supports converting multiple hexadecimal numbers at once, one per line.
Automatic conversion: The system will automatically convert after input. You can also click the "Convert" button to perform the conversion manually.
Quick actions: Use the quick action buttons to add/remove prefixes, convert case, validate formats, and more.
View details: The conversion details area displays statistics such as input length, significant digits, larger value, and number of binary bits.
Reverse conversion: Click the "Reverse Convert" button to convert the decimal result back to hexadecimal format.
Copy result: Click the "Copy Result" button to copy the conversion result to the clipboard, or click "Sample Data" to load demo content.

FAQ

A: Hexadecimal is a base-16 number system that uses 16 characters, 0-9 and A-F, to represent values. It is widely used in computer science because each hexadecimal digit corresponds exactly to 4 binary bits. For example: hexadecimal FF equals decimal 255, and hexadecimal 1A equals decimal 26.

A: The tool supports multiple hexadecimal input formats: no-prefix format (FF, 1A2B), 0x prefix format (0xFF, 0x1A2B), and # prefix format (#FF0000, commonly used for color codes). The system automatically recognizes and processes these formats, removing the prefix before conversion.

A: Click the "Batch Mode" button to switch to batch processing mode, then enter one hexadecimal number per line in the input box. The system will convert all numbers at once, with results displayed in the "input → output" format. If a number has an invalid format, the corresponding error message will be shown. Batch mode is especially useful for processing large amounts of data.

A: Hexadecimal conversion has important applications in many fields: programming and development (memory addresses, debugging information), web design (color code conversion), network configuration (IP addresses, MAC addresses), data analysis (binary file analysis), embedded development (register configuration, protocol parsing), and more.

A: The conversion details provide useful statistics: Input length shows the number of characters in the original input; Valid digits shows the number of hexadecimal digits after removing the prefix; Maximum value shows the largest decimal number that can be represented by the current number of digits; Binary bits shows the corresponding number of binary bits (each hexadecimal digit = 4 binary bits).

A: The tool uses BigInt technology to support hexadecimal number conversion of any length, without the limitations of JavaScript’s standard number type. It can handle very large hexadecimal numbers, such as 64-bit, 128-bit, or even longer numbers. For extremely large numbers, it is recommended to use batch mode to process them separately for better efficiency.

A: Reverse conversion can convert decimal results back into hexadecimal format. In single mode, it directly converts the output decimal number; in batch mode, it extracts all valid decimal results and converts them to hexadecimal. This feature helps verify the accuracy of conversion results or perform two-way conversion operations.

A: Click the "Validate Format" button to check whether the entered hexadecimal numbers meet the requirements. Validation includes: character validity (only 0-9 and A-F are allowed), format standards (the result after removing the prefix). In batch mode, the number of valid and invalid numbers will be counted. Validation helps you identify format issues before conversion.

Hexadecimal to Decimal

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Tool Usage

Conversion details

Conversion examples

Tips

Instructions

Software Usage Instructions

FAQ

Q: What is hexadecimal?

Q: What input formats are supported?

Q: How do I use batch mode?

Q: What are the practical uses of hexadecimal conversion?

Q: What does the information in the conversion details mean?

Q: How are large number conversions handled?

Q: How does the reverse conversion feature work?

Q: How do I verify that the input format is correct?

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