Felo

Bit Counter Translator Online

Count the bits in any text string by computing its UTF-8 byte length and multiplying by eight. You also get the byte and character counts alongside the bit total, so every number is transparent and copyable. Try it online.

What is Bit Counter Translator Online?

Bit Counter Translator Online is a conversational tool that tells you how many bits a piece of text occupies when encoded as UTF-8. You paste a string, and the agent returns the exact bit count, plus the byte count and character count that produced it. It is useful whenever you need to know the encoded size of a string rather than its visible length: checking payload sizes, estimating storage, or confirming that an emoji or accented letter really does cost more than one byte.

The underlying rule is simple and exact. Each character is measured by its UTF-8 encoding length: ASCII characters take one byte, most Latin accented letters and common symbols take two, most CJK and other BMP characters take three, and characters outside the Basic Multilingual Plane, such as many emoji, take four. The byte total is then multiplied by eight to give bits.

Key Features

Exact UTF-8 bit count. Every result is computed from the actual UTF-8 encoding length of the input, not estimated from character count.
Transparent supporting numbers. Each answer includes the byte count and character count so you can verify the arithmetic yourself.
Multi-byte awareness. Emoji, accented letters, CJK text and other non-ASCII characters are counted at their true encoded width.
Multiple strings in one request. Paste several lines and say that each line is a separate string; you get a per-string breakdown plus a total. If you want the whole block measured as one string, say so and the newlines are counted too.
Byte-only or bits-only modes. Ask for just bytes or just bits when that is all you need; the default is the full report with bits, bytes and characters.

How to Use

Paste or type the text you want measured into your message. Include the exact whitespace and line breaks you care about, because they count too.
Send the text with a request such as "count the bits in this string." You can also simply paste the text on its own.
Read the result. You will see the bit count first, followed by the byte count and character count, and a short note on any multi-byte characters that affected the total.

Example Use Cases

Checking the encoded size of an API payload. Paste a JSON fragment and see how many bits it occupies in UTF-8, which helps when a size limit is expressed in bits or bytes.
Confirming that an emoji costs four bytes. Paste a short string containing an emoji and compare its bit count with the same string without the emoji.
Measuring a batch of strings at once. Paste several candidate strings, one per line, and get a per-string bit count plus a combined total for capacity planning.

Tips for Best Results

If whitespace matters, say so. Trailing spaces and newlines are counted unless you ask for them to be excluded.
For a byte count only, ask directly; the agent will skip the multiplication and report bytes.
If you paste several strings, put each one on its own line and say whether you want a per-line breakdown or a single combined total.

FAQ

What input format does it accept?
Any plain text, including letters, digits, punctuation, spaces, newlines, accented characters, CJK characters and emoji. Very long inputs are processed in chunks, and the chunking is stated in the answer.

How accurate is the result?
The bit count is deterministic: it is the UTF-8 byte length of your exact input multiplied by eight. The agent uses a computation step rather than estimating, so the number is reproducible. If your text contains characters whose encoding you are unsure about, ask for the per-character breakdown.

What do I get besides the bit count?
The bit count comes first in a copyable code block, followed by the byte count and character count, plus a short note on any multi-byte characters that affected the total. You can also ask for a per-character breakdown showing each character's code point and UTF-8 byte width, or for several strings measured in one request. The agent does not offer a reverse conversion from a bit count back to text, because that mapping is not unique.

Can I convert a bit count back into text?
No. A bit count alone does not identify the original string, so there is nothing to reverse. The agent will say so and offer to count a new string instead.