This text size calculator measures how large your text is in bytes, kilobytes, and characters. Paste your text above to see its exact size instantly.
How to use it
- Paste your text into the box.
- Read the size in bytes, KB, and characters.
Why size matters
Byte size affects storage, API payload limits, and database fields. Note that non-ASCII characters can take more than one byte in UTF-8.
Frequently Asked Questions
How big is my text in bytes?
Paste it into the text size calculator above to see the exact byte and kilobyte size instantly.
Is one character always one byte?
No. In UTF-8, plain ASCII is one byte, but accented and non-Latin characters can take two to four bytes.
How many bytes in a kilobyte?
One kilobyte is 1,024 bytes, so the tool divides the byte count by 1,024 for the KB figure.