String Length & Byte Counter
Count string length, bytes and characters
Statistics update in real time as you type. Byte size uses UTF-8 encoding.
How to Use String Length & Byte Counter
- 1Type or paste text into the input area.
- 2All statistics update in real time as you type.
- 3View character count, UTF-8 byte size, line count, word count and unique characters.
About String Length & Byte Counter
Analyze text strings in detail: character count, byte size (UTF-8), line count, word count, and unique character count. Useful for developers working with APIs that have byte limits, database field constraints, or character encoding requirements. Real-time analysis as you type.
Frequently Asked Questions
Why is byte size different from character count?
UTF-8 encoding uses 1 byte for ASCII characters but 2-4 bytes for non-ASCII characters like emojis, accented letters, or CJK characters. A 5-character emoji string can be 20+ bytes.
When do I need byte count?
Byte count is important when working with database column limits (e.g., VARCHAR(255) in bytes), API payload size limits, HTTP header restrictions, or file size constraints.
How are unique characters counted?
The tool counts the number of distinct characters in your text. For example, 'hello' has 4 unique characters (h, e, l, o).