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Binary Translator

This binary translator turns text into binary and binary back into text, live as you type. Pick a direction, paste your message, and you'll see the translation right away, ready to copy in a tap. There's also a number-base box that converts between binary, decimal, hex, and octal at once. It's free, private, and runs in your browser, so it's great for homework, coding, or decoding a fun binary note.

  • Text to binary
  • Binary to text
  • Decimal and hex
  • Copy in a tap
  • Live result

Last updated June 17, 2026 8-bit ASCII and UTF-8 Reviewed by the Calcowa team

Binary
01001000 01101001
from text

Bytes are 8 bits each, separated by spaces. Binary input can include spaces or run together.

Number base converter

Type a whole number in any field; the rest update live.

The basics

How does text become binary?

Every character on your keyboard has a number behind it, set by a standard called ASCII, and extended by Unicode. A capital A is 65, a lowercase a is 97, and a space is 32. To turn text into binary, the translator looks up each character's number and writes it in base 2, padded to 8 bits so every byte is the same width. The word Hi becomes 01001000 01101001, two bytes for two letters. Going back the other way, it slices the binary into 8-bit bytes, reads each as a number, and looks up the character. Because it's all rule-based, the translation is exact and reversible, and you'll see it update the instant you type.

A = 65 = 01000001
Step by step

Translating, step by step

Here's the quick routine, either direction:

  1. 1

    Pick a directionChoose text-to-binary or binary-to-text up top.

  2. 2

    Type or pasteDrop your message in the box, and it'll translate live.

  3. 3

    Use the base boxConvert a number between binary, decimal, hex, and octal.

  4. 4

    Copy the resultTap copy and it's on your clipboard, ready to paste.

Quick reference

Letters in binary

A few characters with their decimal code and 8-bit binary byte.

CharacterDecimalBinary
A6501000001
a9701100001
04800110000
(space)3200100000
!3300100001
FAQ

Frequently asked questions

It maps text to binary one character at a time. Every letter, digit, or symbol has a number code, and the translator turns that code into an 8-bit binary byte, then joins the bytes with spaces so they're easy to read. Going the other way, it reads each group of 8 bits, turns it back into a code, and shows the character. It all runs in your browser, so you'll get the result instantly and nothing you type is sent anywhere.

Switch the direction to binary-to-text, paste your binary in, and the translator reads it back into words. It expects 8 bits per character, with or without spaces between the bytes, since that's how text is normally encoded. If a group isn't a clean 8 bits it'll do its best and flag anything odd. This is the quick way to decode a binary message someone sent you, or to check your own work.

Binary is base 2, so it uses only 0 and 1, where each place is worth twice the one to its right: 1, 2, 4, 8, 16, and so on. To read a binary number you add up the place values wherever there's a 1. The byte 01000001 is 64 plus 1, which is 65, the code for a capital A. Computers use binary because a circuit is either off or on, which lines up perfectly with 0 and 1.

Yes, the number-base box does that. Type a value into any of the four fields, binary, decimal, hexadecimal, or octal, and the other three update at once. It's handy when you're reading a color code, a memory address, or a permissions value and need it in another base. The text translator and the base converter sit on the same page, so you don't have to hunt for a second tool.

It does. Spaces, punctuation, and digits all have codes just like letters, so they translate cleanly in both directions. Standard English text works perfectly, and most common symbols do too. Very unusual characters and emoji use longer multi-byte codes, so they're best handled by a dedicated encoder, but for everyday messages and code snippets this translator has you covered.

Yes to both. There's no sign-up, no limit, and the whole thing runs in your browser, so your text never leaves your device. Bookmark it for homework, a class on number systems, a coding project, or just decoding a fun binary message. You'll have your translation in a second, and you can copy the result with one tap whenever you need it.

Keep going

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