How does auto-detect decide the base?

With separators stripped, input made only of 0s and 1s is treated as binary; input containing a–f hex letters is treated as hexadecimal; space- or comma-separated values within 0–7 are read as octal; other digit-only separated values are read as decimal. You can always override the guess by selecting an explicit base.

Will emoji and accented text decode correctly?

Yes, in UTF-8 mode. It feeds the decoded byte values through TextDecoder, so multi-byte UTF-8 sequences reassemble into the correct characters — including emoji and accented letters — exactly reversing a UTF-8 encode. UTF-16 mode instead treats each value as a 16-bit code unit.

Does the input have to be perfectly formatted?

No. Spaces, commas, and other non-digit separators are ignored, so you can paste grouped or messy data. For binary and hex the cleaned length must be a whole number of units (a multiple of 8 bits or 2 hex digits in UTF-8); if it is not, the tool tells you instead of producing wrong output.

What happens if the input is invalid?

The decoder never throws. Instead it returns a clear inline error — for example "Binary length must be a multiple of 8", "No valid hex digits found", or "UTF-8 byte values must be 0–255 (try UTF-16)" — so you can fix the input or switch the encoding.

What do the bits, ones, and bytes stats mean?

Bits seen is the total number of binary digits parsed from the input, ones is how many of them are 1, and bytes decoded is the number of decoded values produced. They give a quick sanity check on the size and content of what you pasted.

Why would I choose UTF-16 over UTF-8?

Use UTF-16 when your numbers represent 16-bit code units rather than 8-bit bytes — for instance data that was encoded from JavaScript char codes. For anything produced as standard UTF-8 bytes, keep the default UTF-8 mode for an accurate, portable result.

Binary to Text Converter

Decode binary, hex, octal, or decimal back to text — auto-detects the base, UTF-8 aware so emoji round-trip. Live.

About this ToolHow it works, benefits & use cases

Binary to Text decodes numeric representations back into readable text. Paste binary, hexadecimal, octal, or decimal and it reconstructs the original string — and it can auto-detect which base you pasted, so you do not have to tell it. Decoding is UTF-8 aware via TextDecoder, which means multi-byte sequences for emoji and accented characters reassemble correctly instead of turning into garbage; a UTF-16 code-unit mode is available too. The parser is forgiving about formatting: it ignores spaces, commas, and other separators, validates that the bit or digit length is a sensible multiple, and reports a clear error (such as a wrong length or an out-of-range byte) rather than throwing. Live stats show bits seen, the number of one-bits, and bytes decoded. The input and settings live in a shareable URL, and everything decodes locally in your browser with no upload.

How to Use

1Set the Input base to Auto-detect, or pick Binary, Hexadecimal, Octal, or Decimal explicitly.
2Choose the Encoding (UTF-8, recommended, or UTF-16 code units).
3Paste your encoded values into the input, or click "Load example" to try a UTF-8 sequence with an emoji.
4Click Decode; if the input is malformed, an inline message explains what is wrong.
5Read the bits / ones / bytes stats, then copy or download the decoded text, or share the URL.

Key Benefits

Decodes binary, hex, octal, and decimal, with automatic base detection
UTF-8 aware via TextDecoder so emoji and accents round-trip from their byte sequences
Optional UTF-16 code-unit decoding
Tolerant input parsing — ignores spaces, commas, and stray separators
Clear, non-throwing error messages for wrong lengths or out-of-range values
Live stats for bits seen, one-bits, and bytes decoded
Shareable URL and fully client-side decoding with no upload

Common Use Cases

Reading a binary or hex dump back into the original string while debugging
Recovering text from numeric data copied out of logs or protocol captures
Verifying that a Text to Binary encoding round-trips, including emoji
Decoding decimal or octal byte lists produced by other tools or languages
Quickly identifying an unknown numeric format using auto-detect

Options

Input base

Encoding

Encoded input

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Decoded text

Enter encoded input above to see the decoded text.

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Binary to Text Converter

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