Free Byte Counter
A byte is 8 bits — the basic unit of digital storage. Plain ASCII text uses 1 byte per character, but any non-ASCII character (accented letters, emoji, Chinese, Arabic) takes 2–4 bytes in UTF-8. This counter shows the exact byte size of your text. For raw character counts, use our Character Counter; for SMS-specific encoding analysis, try the SMS Counter.
How the Byte Counter Works
The counter encodes your text as UTF-8 and counts the resulting bytes. ASCII characters take 1 byte; Latin extended (é, ñ) take 2 bytes; CJK characters typically take 3 bytes; most emoji take 4 bytes.
Tips & Best Practices
1ASCII text = 1 byte per character
Plain English text in 7-bit ASCII uses 1 byte per character. The byte count equals the character count.
2Emoji eat 4 bytes each
Most emoji take 4 bytes in UTF-8. Compound emoji (skin tones, family) can take 7+ bytes. Emoji are expensive in bandwidth and storage.
3Database column sizing
If a database column is sized in bytes (VARCHAR(255)), non-ASCII characters reduce the number of usable characters. A VARCHAR(255) can hold 255 ASCII characters or only 63 4-byte emoji.
4API limits often use bytes
Many APIs (AWS DynamoDB, MongoDB, etc.) limit document or field size in bytes, not characters. Use the byte counter to verify before sending.
Need a Full Text Analysis?
Our main Character Counter gives you a complete breakdown — characters, words, sentences, paragraphs, reading time, and keyword frequency — all in one view.
📊Open Full Character CounterFAQ
Related Counters
Bit Counter
Free bit counter. Tells you the exact number of bits your text takes in UTF-8 — 8× the byte count. Useful for bandwidth and encoding analysis.
Unique Character Counter
Free unique character counter. Counts the number of distinct characters in your text — useful for crypto, password entropy, and Unicode analysis.
Letter Counter
Free letter counter. Counts only alphabetic letters (A–Z, a–z) in your text — ignoring spaces, digits, punctuation, and symbols.