Byte Counter — Free Online Tool
Measure the size of your input text in UTF-8 or UTF-16 bytes. Includes Base64 size, character frequency, and byte weight per character.
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Measure the number of lines and space characters in your input.
Byte Size Analyzer with Encoding Options
Instantly calculate how many bytes your content uses in either UTF-8 or UTF-16, and preview the Base64 encoding size.
What It Measures
- Total Bytes (UTF-8 / UTF-16)
- Base64 Encoded Size
- Character Count
- Word Count
- Line Count
- Top Characters with Byte Usage
Use Cases
- Check SMS and API limits
- Analyze payloads before sending
- Compare text size in different encodings
- Identify byte-heavy characters for optimization
Frequently Asked Questions (FAQs)
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