CF7 Math Captcha is a lightweight plugin that adds a math captcha field to your Contact Form 7 forms.
It helps reduce spam without using Google reCAPTCHA.
Very simple to use: just add [mathcaptcha* captcha-field] to your Contact Form 7 form.

Installation

Upload the plugin folder to the /wp-content/plugins/ directory or install it directly from the WordPress plugin repository.
Activate the plugin through the ‘Plugins’ menu in WordPress.
Edit your Contact Form 7 form and add:
[mathcaptcha* captcha-field]

Frequently Asked Questions

Does it work without Contact Form 7?

No. This plugin requires Contact Form 7 to be installed and active.

Can I change the math operations?

Right now, it supports addition only (e.g., 3 + 5 = ?). More options may come in future versions.

Review feed

Mustafiz Munna

10/12/2025

Keeps spam away without extra hassle

Nice, clean and lightweight solution for adding Math Captcha to Contact Form 7. Works smoothly and keeps spam away without extra hassle. Good job, bro! 👏

Screenshots

$Example captcha field in a Contact Form 7 form.$
Example captcha field in a Contact Form 7 form.

Changelog

1.0.1

Removed deprecated load_plugin_textdomain() call.
Updated Tested up to to 6.8.
Minor code cleanup.

1.0.0

Initial release.

1.0.2

Update Plugin Icon

1.0.3

Update Plugin Infomation

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