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Lead Time Calculator

Privacy Policy

Last updated: September 20, 2026

1. Overview

Lead Time Calculator ("we", "our", "us") is an independent site operated by Usama Naveed. This Privacy Policy explains how information is handled when you use our lead time calculators and read our articles.

The site is free to use and supported by advertising. Sections 6 and 7 below explain what that means for cookies and third-party data collection.

2. Data We Collect

Short answer: We don't collect your calculation data.

All lead time calculations are performed entirely in your browser using client-side JavaScript. No calculation inputs, results, or saved scenarios are ever transmitted to our servers.

3. Local Storage

When you save scenarios, they are stored in your browser's local storage. This data:

  • Stays on your device only
  • Is not accessible to us or any third party
  • Can be cleared by you at any time through your browser settings
  • Is not included in any analytics or tracking

4. Contact Form

If you use our contact form, we collect the information you voluntarily provide (name, email, message). This data is processed through Web3Forms and is used solely to respond to your inquiry. We do not sell, share, or use this information for marketing purposes.

5. Analytics

We may use privacy-focused, cookie-free analytics to understand general usage patterns (page views, device types). This data is aggregated and anonymous - it cannot be used to identify individual users.

6. Cookies and Advertising

This site uses cookies in two ways:

  • Theme preference - a first-party cookie storing your dark/light mode choice. It contains no personal information.
  • Advertising cookies - set by Google and its partners to serve and measure the ads that keep this site free.

Specifically:

  • Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites.
  • Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.
  • You may opt out of personalised advertising by visiting Google Ads Settings.
  • You can opt out of a third-party vendor's use of cookies for personalised advertising at aboutads.info.
  • If you are in the EEA, UK or Switzerland, you will be asked for consent before personalised advertising cookies are set, and you can change or withdraw that choice at any time.

Advertising cookies are set by Google, not by us. We do not receive, store or have access to any personal information they collect. Your calculator inputs are never shared with advertisers - see sections 2 and 3.

7. Third-Party Services

We use the following third-party services:

Each service has its own privacy policy governing how it handles data.

8. Children's Privacy

Our Service is not intended for children under 13. We do not knowingly collect personal information from children.

9. Changes to This Policy

This policy was last revised on 20 September 2026 to disclose the use of Google advertising cookies.

We may update this policy from time to time. We will notify you of changes by updating the "Last updated" date at the top of this page.

10. Your Choices

You can control what this site and its advertising partners store on your device:

  • Opt out of personalised ads via Google Ads Settings - you will still see ads, but they will not be personalised
  • Block or delete cookies through your browser settings
  • Clear saved scenarios at any time by clearing your browser's local storage

The calculators work fully with cookies blocked - nothing on this site requires them to function.

11. Contact

If you have questions about this Privacy Policy, email contact@leadtimecalculator.net or use the contact form.