String Length Calculator
Analyze text length: character count, UTF-8 byte length, UTF-16 length, word count, and line count.
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UTF-8 Bytes
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UTF-16 Length
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Words
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Lines
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Frequently Asked Questions
What is the difference between character count and byte length?
Character count is the number of visible characters, while byte length measures storage size in UTF-8 encoding where non-ASCII characters use 2-4 bytes each.
Why is UTF-16 length different from character count?
UTF-16 length matches JavaScript's .length property, which counts surrogate pairs (like emojis) as 2 units instead of 1 character.
How are words counted?
Words are counted by splitting text on whitespace, so any sequence of non-space characters separated by spaces, tabs, or newlines counts as one word.