Privacy Policy

Your privacy matters to us. This page explains exactly what data we collect, how we use it, and the choices you have.
Last Updated: [8July, 2026]

1. Introduction

Welcome to 40Calc. This Privacy Policy explains how 40calc.com (the “Site”), operated by Mustafa Dev, collects, uses, and protects information when you visit and use our website.

We have written this policy in plain language on purpose — you deserve to understand exactly what happens with your data, not wade through legal jargon to find out.

By using 40Calc, you agree to the collection and use of information as described in this policy.


2. The Short Version

Before the full details, here’s the summary:

  • Your calculator inputs are never stored. Everything you type into a calculator is processed in your browser only — it never reaches our servers.
  • We collect basic analytics data to understand how the site is used and improve it.
  • We collect contact form data only when you voluntarily reach out to us.
  • We do not sell your data to anyone, ever.
  • We use cookies for basic site functionality and analytics only.

3. Information We Collect

3.1 Information You Give Us Directly

When you use our Contact form, we collect:

  • Your name
  • Your email address
  • The subject and content of your message

We only use this information to respond to your inquiry. We do not add you to any mailing list or use your contact details for marketing without your explicit consent.

3.2 Calculator Inputs

The numbers and values you enter into any calculator on 40Calc are processed entirely within your browser using JavaScript. This data is:

  • Never transmitted to our servers
  • Never stored in a database
  • Never linked to your identity

Your calculations are completely private.

3.3 Automatically Collected Data

Like most websites, when you visit 40Calc we automatically collect certain technical information, including:

  • Your IP address (anonymized where possible)
  • Browser type and version
  • Device type (mobile, tablet, desktop)
  • Operating system
  • Pages visited and time spent on each page
  • Referring URL (the page you came from)
  • Date and time of your visit

This data is collected through analytics tools (see Section 5) and is used only to understand how the Site is used and to improve it. It is not used to personally identify you.


4. How We Use Your Information

We use the information we collect for the following purposes:

To respond to your inquiries
Contact form submissions are used solely to reply to your message and resolve your query.

To understand and improve the Site
Analytics data helps us understand which calculators are most used, how visitors navigate the site, and where we can improve performance and usability.

To maintain site security
Technical data helps us detect and prevent abuse, spam, and malicious activity.

To comply with legal obligations
We may use or retain data where required by applicable law.

We do not use your data for:

  • Targeted advertising based on your behavior
  • Building personal profiles
  • Automated decision-making that affects you
  • Any purpose not listed above

5. Third-Party Services We Use

We use a small number of trusted third-party services to operate the Site. Each has its own privacy policy governing how it handles data.

Google Analytics
We use Google Analytics to collect anonymized usage data. Google may set cookies on your device. You can opt out of Google Analytics tracking by installing the Google Analytics Opt-out Browser Add-on.

Google AdSense (if/when applicable)
We may display advertisements through Google AdSense. Google may use cookies to serve ads based on your prior visits to this or other websites. You can opt out of personalized advertising by visiting Google’s Ad Settings.

Web Hosting Provider
Our hosting provider may collect server logs containing IP addresses and technical data as part of standard hosting operations.

Contact Form Service 
Form submissions are processed through Elementor Form. Submitted data is stored temporarily to allow us to respond to your message.


6. Cookies

What are cookies?

Cookies are small text files stored on your device when you visit a website. They help the site remember information about your visit.

What cookies does 40Calc use?

Essential cookies
Required for the Site to function properly. These cannot be disabled.

Analytics cookies
Used by Google Analytics to collect anonymized usage data. These can be disabled without affecting site functionality.

Advertising cookies (if/when applicable)
Used by Google AdSense to serve relevant advertisements. You can opt out via Google’s Ad Settings.

How to control cookies

You can control or disable cookies through your browser settings. Instructions for the most common browsers:

Note: disabling certain cookies may affect how some parts of the Site function.


7. Data Retention

Contact form data
We retain messages for as long as necessary to resolve your inquiry, plus a reasonable period for record-keeping afterward, after which they are permanently deleted.

Analytics data
Anonymized analytics data is retained according to our analytics provider’s default retention settings (typically 14 months for Google Analytics).

Calculator inputs
Not retained at all — they are never sent to our servers.


8. Your Rights

Depending on where you are located, you may have certain rights regarding your personal data:

For users in the European Union / UK (GDPR)

  • The right to access the personal data we hold about you
  • The right to correct inaccurate data
  • The right to request deletion of your data
  • The right to restrict or object to processing
  • The right to data portability
  • The right to withdraw consent at any time

For users in California (CCPA)

  • The right to know what personal information is collected about you
  • The right to request deletion of your personal information
  • The right to opt out of the sale of your personal information (we do not sell data)
  • The right not to be discriminated against for exercising your rights

For all users
To exercise any of these rights, contact us at info@40cal.com. We will respond within 30 days.


9. Children’s Privacy

40Calc is not directed at children under the age of 13 (or 16 in certain jurisdictions, including the EU). We do not knowingly collect personal information from children.

If you believe a child has provided us with personal information, please contact us at info@40calc.com and we will delete it promptly.


10. Data Security

We take reasonable and appropriate technical and organizational measures to protect the information we collect against unauthorized access, loss, misuse, or alteration. These measures include:

  • HTTPS encryption on all pages
  • Limited access to contact form data
  • Regular review of our data practices

However, no method of transmission over the internet or method of electronic storage is 100% secure. While we do our best to protect your data, we cannot guarantee absolute security.


11. Links to Other Websites

40Calc may contain links to third-party websites. This Privacy Policy applies only to 40calc.com. We are not responsible for the privacy practices of any linked third-party site and encourage you to read their privacy policies before providing any personal information.


12. Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, or legal requirements. When we do, we will:

  • Update the “Last Updated” date at the top of this page
  • Note significant changes clearly at the top of the policy for 30 days

We encourage you to review this page periodically. Continued use of the Site after any changes constitutes your acceptance of the updated policy.


13. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or how we handle your data, please contact us:

Email: info@40cal.com
Contact Form: Click Here
We will respond to all privacy-related inquiries within 30 days.