TXT · Text & Data tools

Decimal to Binary Converter

Input
Output (Binary)
Go To Full Number Base Converter

Converting decimal to binary

Paste your base 10 decimal integers into the input pane. The converter processes the values instantly and outputs the base 2 binary equivalents. It supports both positive and negative values using standard plus or minus signs. Output format omits the 0b prefix by default.

Allowed characters and numbers

Decimal input must consist of whole integer values containing only digits 0–9. Fractions, commas, and scientific notation are not supported. Spaces and underscores are safely ignored, allowing you to format long numbers for readability.

Batch processing

This variant runs in batch mode by default. Paste multiple decimal values using one number per line, and the tool returns a matching list of binary results. If a line contains invalid characters, an error message appears inline without interrupting the rest of the batch.

Frequently Asked Questions

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

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

No. It outputs a signed binary string with a leading '-' for negative values. If you need fixed-width two’s complement (8/16/32-bit), use the full tool and format accordingly.

This converter is for integers only. Values like 3.14 or 1e6 aren’t supported as decimal input.

No.

Try one of our format-specific converters below

Full Number Base Converter tool

Explore Our Tools

Browse all tools