Base Converter

Supports arbitrary conversion between bases 2–36, including binary, octal, decimal, and hexadecimal, with support for single and batch conversions.

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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Conversion settings

Choose the conversion type and base range first. Bases 2-36 use 0-9 and A-Z. Input is case-insensitive.

Conversion modeSingle values convert in real time; batch mode is for multiple lines or files

Base settingsTarget base is used for custom results and batch output

Source base

Source base value

Target base

Target base value

Display & parseKeep defaults first, then adjust output format as needed

Uppercase letters Show common base prefixes Grouped Display Pad binary to bytes Ignore spaces and underscores Detect 0b/0o/0x Include original values in batch results

Bits per group When grouping is enabled, group from right to left.

Batch parse mode Files and text input use this parse mode.

Input data

Allowed characters for current source base: 0-9. Click an example first, then replace it with your value.

Single valueInput is validated automatically. Click Next to view full results.

Value to convert Waiting for input.

Batch sourceChoose either text input or file import

Batch values By default, each line is treated as one value; parsing can be adjusted in settings.

Select TXT/CSV file You can select multiple files; only the first 20 are shown, but all are converted.

Tip: Set parameters first, then click “Next: View Results”.

Conversion results

The results area previews only the first 20 batch records; copy and download include all results.

Common base resultsClick the copy button to copy a single result

Binary (2)

-

Octal (8)

-

Decimal (10)

-

Hexadecimal (16)

-

Custom target baseTarget base 16

-

Binary bit count-

Estimated bytes-

Number sign-

Source base-

Waiting to process.

Bulk Results Preview first 20

No.	Source	Original value	Conversion results	Status
Waiting for batch conversion.

Common base reference 0–15 reference table for checking basic results

Decimal	Binary	Octal	Hex
0	0000	0	0
1	0001	1	1
2	0010	2	2
3	0011	3	3
4	0100	4	4
5	0101	5	5
6	0110	6	6
7	0111	7	7
8	1000	10	8
9	1001	11	9
10	1010	12	A
11	1011	13	B
12	1100	14	C
13	1101	15	D
14	1110	16	E
15	1111	17	F

Instructions

Software Usage Instructions

Set conversion parameters: First choose single conversion or batch conversion in “Set Parameters”, then set the source base and target base. Bases 2–36 are supported. Common bases include binary, octal, decimal, hexadecimal, base 32, and base 36.
Configure display options:
- Uppercase letters: Output letters in hexadecimal and higher bases in uppercase.
- Show common base prefixes: Add the 0b, 0o, and 0x prefixes to binary, octal, and hexadecimal results.
- Grouped display: Display long numbers in groups of the specified length for easier reading and checking.
- Pad binary by byte: Pad binary results to a multiple of 8 bits.
- Recognize 0b/0o/0x: When entering numbers with prefixes, automatically parse them using the corresponding base.
Single conversion: Go to “Input Data” and enter an integer, or click the sample data to fill it in quickly. The tool will validate whether the characters match the source base, and display binary, octal, decimal, hexadecimal, and custom target base results on the results page.
Batch text conversion: After selecting batch conversion, you can enter one value per line in the text box, or choose to parse by spaces, commas, semicolons, or CSV cells. Click “Next: View Results” to process in batch.
Batch file conversion: After selecting file import, you can upload multiple TXT, CSV, or LOG text files. The interface only displays the first 20 files or the first 20 results, but all content will be included during processing.
Copy and download results: Single results can be copied individually; batch results can be copied in full, or downloaded as TXT or ZIP. When processing multiple files, result file names in the ZIP will use the original file names as much as possible, and numbers will be appended automatically to distinguish duplicate names.
Save settings: Frequently used parameters can be kept by clicking “Save Settings” and will continue to be used the next time you open the tool. To reset them, click “Restore Defaults”.

FAQ

A: Integer conversion between bases 2–36 is supported, including binary, octal, decimal, hexadecimal, base 32, base 36, and more. You can also manually enter a custom base within the range of 2–36.

A: The tool uses 0-9 and A-Z to represent different values. Hexadecimal uses 0-9 and A-F, while base 36 uses 0-9 and A-Z. Both uppercase and lowercase can be recognized during input, and output case can be switched in the settings.

A: Yes. The tool processes integer values using big integer methods, making it suitable for base conversion of 64-bit, 128-bit, and even longer integers. The results page displays the number of binary bits and estimated bytes to help assess the data size.

A: This is because the input contains characters that are not allowed in the source base. For example, binary can only contain 0 and 1, octal can only contain 0-7, and hexadecimal can only contain 0-9 and A-F. Please check the source base setting or the input content.

A: 0b represents binary, 0o represents octal, and 0x represents hexadecimal. After enabling “Recognize 0b/0o/0x,” inputs with these prefixes will be parsed using the corresponding base; after enabling “Show common base prefixes,” the results will also include the corresponding prefixes.

A: TXT, CSV, LOG, and other text files are supported. UTF-8 encoding is recommended. Values can be processed one per line, or you can choose automatic delimiter detection or CSV/TSV cell parsing in the settings.

A: When downloading a ZIP after processing multiple files, the result file names will use the original file names as much as possible. If multiple files have the same name, the tool will append numbers to the file names to prevent them from overwriting each other.

Base Converter

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Tool Usage

Conversion settings

Input data

Conversion results

Instructions

Software Usage Instructions

FAQ

Q: Which base conversions are supported?

Q: How are characters above hexadecimal represented?

Q: Can very long integers be converted?

Q: Why does it say a character does not belong to the current base?

Q: What do the 0b, 0o, and 0x prefixes mean?

Q: What format requirements are there for batch conversion files?

Q: Will file names change when downloading files in bulk?

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