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Hex to Octal Converter

Input
Output (Octal)
Go To Full Number Base Converter

Convert hexadecimal integers (base 16) into their octal equivalents (base 8). This variant is locked to batch mode, allowing you to paste multiple hex values separated by newlines to get an instant line-by-line octal translation.

Supported hex formats

The converter accepts standard hexadecimal characters (0-9, A-F, a-f). You can safely include 0x prefixes, and any spaces or underscores in the input will be automatically ignored during processing. Signed values are supported by adding a leading + or -.

Error handling

Each line is evaluated independently. If a line contains invalid characters (like G, decimals, or letters beyond F), that specific line will output an error message while the rest of your batch continues processing normally.

This means you can safely convert massive hex strings without hitting floating-point rounding errors or standard 64-bit limits.

Frequently Asked Questions

Yes. Use a leading minus sign (−) or plus sign (+). The sign is preserved in the octal output.

Yes. This variant runs in batch mode by default: paste one hex integer per line and get one octal result per line.

Yes. Inputs like 0xFF, -0x1A, and +0x10 are accepted in this variant.

Yes. Spaces and underscores are ignored, so values like FF_FF or 0xFF FF work.

Octal is common in Unix-style permissions and some legacy systems. Converting helps when data is shown in hex but you need octal.

Try one of our format-specific converters below

Full Number Base Converter tool

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