String Length & Byte Counter
Analyze string length in characters, bytes (UTF-8/UTF-16), words, and code points.
About the String Length Counter
Analyze string length in characters, bytes, and code points. Useful for database field sizing and API limits.
Private by design
Everything you type here is processed inside your browser. Nothing is sent to a server, logged or stored, so it is safe to use with real numbers, drafts and anything you would not paste into a hosted tool.
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Questions people ask
How do I find the length of a string?
Paste your text and the tool shows the length in characters, bytes (UTF-8), and Unicode code points simultaneously.
Why is byte length different from character length?
Multi-byte characters like emojis or international characters take more than one byte in UTF-8 encoding, making byte length larger than character count.
When do I need to know byte length?
Byte length matters for database column sizing, API payload limits, file sizes, and any system that measures data in bytes rather than characters.