What is the difference between characters and bytes?

Characters count logical text units. Bytes count storage units. ASCII characters are 1 byte each. Emoji, CJK characters, and many accented letters require 2–4 bytes in the UTF-8 encoding standard.

How is the Flesch Reading Ease score computed?

The formula is: 206.835 - 1.015 × (words / sentences) - 84.6 × (syllables / words). Syllables are estimated by counting vowel groups in each word.

Is my text sent to a server?

No. All calculations run inside your browser using JavaScript. No text leaves your device.

Does the character frequency table include spaces?

Yes. Space, tab, and newline characters are counted and listed in the frequency table, which lets you spot formatting anomalies.

Free & Private Online Browser Utility

Character Counter with Spaces & Limits

Count characters, words, sentences, and paragraphs, calculate UTF-8 byte size, score readability with the Flesch Reading Ease formula, and view per-character frequency distribution entirely inside your browser. The tool uses the Web TextEncoder API for accurate multi-byte character byte lengths covering emoji, CJK characters, and accented Latin glyphs. No text is sent to any server.

How to use

Step 1: Paste Your Text

Drop any text, code snippet, tweet, or document into the input area. Stats update in real time.
Step 2: Read the Stats Panel

Character count (with and without spaces), word count, UTF-8 byte size, sentence count, and Flesch Reading Ease score display in real time.
Step 3: Inspect Frequency Analysis

The character frequency table shows how often each distinct character appears, sorted by frequency descending.

Options explained

Characters with Spaces

Total count of all characters including whitespace, tabs, and newlines.

When to use: Use for platforms such as Twitter, SMS, or ad copy tools that count every character including spaces.

Characters without Spaces

Character count after removing all whitespace characters.

When to use: Use for word processing tools or academic submissions that specify character limits excluding spaces.

UTF-8 Byte Size

The number of bytes the text occupies when encoded as UTF-8 using the TextEncoder API.

When to use: Use when you need to verify a text payload fits within a database column size, API limit, or HTTP header byte budget.

Flesch Reading Ease

Score from 0 to 100 based on average sentence length and average syllable count. Higher is easier to read.

When to use: Use when writing blog posts, technical documentation, or marketing copy targeted at a specific reading level.

Worked example

Input: Sphinx of black quartz, judge my vow! Bright vixens jump; dozy fowl quack. (2 sentences)

Output: Characters (with spaces): 74 | Characters (no spaces): 62 | UTF-8 bytes: 74 | Words: 13

Measured on standard English pangrams using browser TextEncoder UTF-8 serialization.

Tips & limits

Emoji add 1 to the character count (JavaScript counts by UTF-16 code unit pairs) but consume 4 bytes in UTF-8.
A Flesch score of 60–70 targets a general adult audience. Legal or scientific text often scores below 30.
The frequency table is useful for detecting accidental repeated characters or detecting invisible Unicode whitespace.

Common problems

Byte count is higher than character count: Non-ASCII characters such as emoji, Chinese, Japanese, Korean, and accented letters occupy 2–4 bytes in UTF-8 even though they count as 1 character.
Flesch score is unexpectedly low: Long, complex sentences and polysyllabic words reduce the score. Shorter sentences and simpler vocabulary raise it.

Frequently Asked Questions (FAQ)

What is the difference between characters and bytes?: Characters count logical text units. Bytes count storage units. ASCII characters are 1 byte each. Emoji, CJK characters, and many accented letters require 2–4 bytes in the UTF-8 encoding standard.
How is the Flesch Reading Ease score computed?: The formula is: 206.835 - 1.015 × (words / sentences) - 84.6 × (syllables / words). Syllables are estimated by counting vowel groups in each word.
Is my text sent to a server?: No. All calculations run inside your browser using JavaScript. No text leaves your device.
Does the character frequency table include spaces?: Yes. Space, tab, and newline characters are counted and listed in the frequency table, which lets you spot formatting anomalies.