String Length Calculator
Calculate string length in bytes, characters, and UTF-8/UTF-16 encoding sizes. Shows code points for multi-byte characters.
How to Use String Length Calculator
The String Length Calculator is a free online tool that analyzes text to show its length in multiple encoding formats simultaneously. See the character count, Unicode code points, UTF-8 byte size, and UTF-16 byte size all at once. This is essential for developers working with APIs that have byte limits, database column sizing, network payload optimization, and understanding how multi-byte characters like emojis affect string size. Simply type or paste text and see all measurements update in real-time. Whether you are debugging encoding issues, estimating storage requirements, or checking if text fits within byte-limited fields, this tool provides instant accurate measurements.
Step-by-Step Instructions
- Type or paste text into the input area
- View character count and code points instantly
- Check UTF-8 and UTF-16 byte sizes
- Copy all measurements with the copy button
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