Why is the UTF-8 byte count different from character count?

Standard ASCII characters use 1 byte each, while accented letters (e.g. é, ç) take 2 bytes, and emojis (e.g. 🚀, 🎉) take 4 bytes in UTF-8 encoding.

How does the database column limit checker work?

You can select column types like VARCHAR(64), VARCHAR(255), or TEXT to see how many bytes remain before exceeding database row constraints.

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Calculate UTF-8 byte length, character count, and database VARCHAR column limits.

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Detect and remove hidden zero-width spaces, Unicode marks, and invisible formatting

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Type or paste your text into the editor input area.
View the live breakdown of UTF-8 Bytes, Characters, Words, and ASCII vs Multi-byte chars.
Select a column size (e.g. VARCHAR(255)) to check whether your text fits within database limits.

Why is the UTF-8 byte count different from character count?: Standard ASCII characters use 1 byte each, while accented letters (e.g. é, ç) take 2 bytes, and emojis (e.g. 🚀, 🎉) take 4 bytes in UTF-8 encoding.
How does the database column limit checker work?: You can select column types like VARCHAR(64), VARCHAR(255), or TEXT to see how many bytes remain before exceeding database row constraints.

Review policy: references and behavior notes are checked whenever the tool implementation changes.