String Size Calculator

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Highlight by byte size

1 byte (ASCII)

2 bytes

3 bytes

4 bytes (Emoji)

0

Bytes

0

Kilobytes (KB)

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Megabytes (MB)

Characters: 0

Lines: 0

Words: 0

Encoding: UTF-8

Encoding Breakdown

How it works:

UTF-8 Encoding: Calculates the actual byte size when encoded in UTF-8
ASCII (1 byte): Characters like a-z, A-Z, 0-9
2 bytes: Latin extended, Cyrillic, Greek, etc.
3 bytes: Chinese, Japanese, Korean, and most other characters
4 bytes: Emoji and rare Unicode characters

Example: "Hello 👋" = 5 bytes (ASCII) + 1 byte (space) + 4 bytes (emoji) = 10 bytes total