Text size calculator
Calculate actual UTF-8 byte size and show character and line counts.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Text
Text size
Calculated from actual UTF-8 bytes.
Enter text to calculate its size
Bytes: 0 · KiB: 0 · Characters: 0 · Lines: 0
What this tool does
- Estimate text storage size.
- Compare UTF-8 size for Chinese and English text.
- Check character and line totals together.
Example
Input
你好
Output
6 bytes (0.01 KiB)
TextEncoder calculates bytes; Unicode character count is reported separately.
Frequently asked questions
Do Chinese and English use the same size?
No, Chinese characters usually use three UTF-8 bytes.
How is KiB calculated?
Bytes divided by 1024, displayed to two decimals.
How are emoji counted?
By their actual UTF-8 bytes from TextEncoder.
Keywords：文本大小text sizeUTF-8 bytesbyte calculatortext statistics