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  1. Home
  3. Text Tools
  5. String Length Calculator

String Length Calculator

Count characters, bytes, words, and more

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Characters
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No Spaces
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UTF-8 Bytes
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Words
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Lines
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Paragraphs
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ASCII Bytes

Related Tools

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  • Remove Duplicates - dedupe lines
  • Readability Calculator - analyze text
  • Line Sorter - process lines

How to Use String Length Calculator

  1. 1

    Paste your text

    Enter or paste the text you want to analyze into the input field.

  2. 2

    View length statistics

    See character count, byte length, and other text metrics.

  3. 3

    Copy the result

    Click Copy to save the statistics to your clipboard.

Frequently Asked Questions

Yes, the String Length Calculator is completely free with no limitations. Calculate string lengths as often as you need without any registration or restrictions.

Yes, all calculations happen locally in your browser using JavaScript. Your text is never sent to any server, making it safe to measure sensitive content like passwords, API keys, or confidential text.

The tool counts the number of characters in your text, including letters, numbers, spaces, and special characters. It also shows byte length for different encodings (UTF-8, UTF-16) which is important for database fields and API limits.

String length is important for database field limits, API payload restrictions, SMS character counts, form validation, and ensuring text fits within UI constraints. Different systems may count characters differently based on encoding.

The tool shows both the character count (how many characters you see) and the byte length (storage size). Emoji and non-ASCII characters may count as one character but use multiple bytes in UTF-8 encoding.