SMOG Index Calculator

Estimates the years of education needed to understand a piece of writing.

About this tool

Enter your text to calculate its SMOG Index and ensure it meets the required reading level....

SMOG Index Calculator

Estimates the years of education needed to understand a piece of writing.

SMOG Index

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Word Count

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Sentence Count

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SMOG Index Calculator - Simple Readability Metric

Estimate the education level needed to understand your text with the SMOG Index Calculator. A simple, reliable formula widely used in healthcare and education.

How to use the SMOG Index Calculator

1

Input Text

Copy your text and paste it into the analyzer box.

2

Run Analysis

The tool applies the SMOG (Simple Measure of Gobbledygook) formula to your text.

3

View SMOG Grade

The output is the approximate years of education a reader needs to understand the text completely.

4

Target Your Audience

Use the SMOG grade to ensure your materials (like health brochures or educational handouts) are suitable for your target demographic.

Frequently Asked Questions

What does SMOG stand for?

SMOG stands for 'Simple Measure of Gobbledygook'. It is a readability formula developed by G. Harry McLaughlin.

When should I use the SMOG Index?

It is particularly known for its accuracy in assessing healthcare materials and consumer information where 100% comprehension is critical.

How is it different from Flesch-Kincaid?

SMOG is often considered more rigorous and tends to yield slightly higher grade levels, ensuring that if a text passes SMOG, it is definitely readable at that level.

Is there a limit to the text length?

No, you can analyze short snippets or longer documents. However, for the most accurate results, a sample of at least 30 sentences is often recommended for manual calculation, but our tool handles any length.

Why trust the SMOG Index?

The gold standard for healthcare and consumer information.

High Accuracy for Comprehension
Widely Used in Healthcare
Simple & Reliable
Instant Calculation
Secure Processing