Gunning Fog Index Calculator

Estimates the years of formal education a person needs to understand the text on the first reading.

About this tool

Paste your text to calculate the Gunning Fog Index and see if your writing is appropriate for your intended audience....

Gunning Fog Index Calculator

Estimates the years of formal education a person needs to understand the text on the first reading.

Gunning Fog Index

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Word Count

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Sentence Count

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Gunning Fog Index - Estimate Reading Difficulty

Calculate the years of formal education required to comprehend your writing with the Gunning Fog Index Calculator. Fast, accurate, and essential for professional communication.

How to use the Gunning Fog Index Calculator

1

Paste Content

Insert the text you wish to analyze into the provided text area.

2

Calculate Index

The tool computes the Gunning Fog Index by analyzing sentence length and complex words.

3

Read the Result

The result represents the number of years of education needed to understand the text on the first reading.

4

Adjust Complexity

If the index is too high for your audience, try splitting long sentences and replacing complex words with simpler alternatives.

Frequently Asked Questions

What is the Gunning Fog Index?

It is a readability test that estimates the years of formal education a person needs to understand a text on the first reading.

What is an ideal Gunning Fog score?

For general business writing, a score of 8 to 12 is ideal. A score of 12 corresponds to the reading level of a high school senior.

What makes a word 'complex' in this formula?

The Gunning Fog Index typically counts words with three or more syllables as complex words, with some exceptions (like proper nouns).

Can I use this for technical writing?

Yes, it's very useful for technical writers to ensure their documentation isn't unnecessarily difficult to read.

Why use the Gunning Fog Index?

Ensure clarity in professional and business writing.

Professional Grade Analysis
Identify Complex Sentences
Improve Business Communication
Instant Results
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