Cookie Policy
Last updated: August 2026
This Cookie Policy explains what cookies are, how Tonnage Calculator AC ("we", "us", or "our") uses them on our website at tonnagecalculatorac.com, and what choices you have regarding cookies.
What Are Cookies?
Cookies are small text files that are stored on your device (computer, tablet, or mobile phone) when you visit a website. They help the website remember your preferences and improve your browsing experience. Cookies can be "session" cookies (deleted when you close your browser) or "persistent" cookies (remain on your device for a set period or until you delete them).
How We Use Cookies
We use cookies and similar technologies for the following purposes:
Essential Storage
We record your consent choice so we don't have to ask again on every page. This is not strictly a cookie; it is stored in your browser's local storage and is never sent to our servers. You cannot opt out of it, because it is what remembers your opt-out.
| Name | Type & Purpose | Duration |
|---|---|---|
| cookie_consent | Local storage: stores your consent choice and the date you made it | 180 days, or until you clear your browser data |
Analytics Cookies
We use Google Analytics to understand how visitors interact with our website, which helps us improve the calculator and content. Whether these cookies are set before you make a choice depends on where you are:
- European Economic Area, United Kingdom, and Switzerland: no analytics cookies are set unless you select "Accept All". Until then, Google receives only anonymous, cookieless signals.
- Everywhere else: analytics is on by default, and selecting "Reject" turns it off. We also honour the Global Privacy Control signal if your browser sends one.
| Cookie Name | Purpose | Duration |
|---|---|---|
| _ga | Google Analytics - distinguishes unique users | 2 years |
| _ga_* | Google Analytics - maintains session state | 2 years |
Advertising Cookies
We do not currently show ads, and no advertising cookies are set on this site. We are applying to Google AdSense. If and when ads go live, we will update this policy before any advertising cookie is used, and personalized advertising will remain off unless you select "Accept All".
Affiliate Links
Some pages link to products on Amazon as part of the Amazon Services LLC Associates Program, and we earn a commission from qualifying purchases at no extra cost to you. These links set no cookies on this site. Amazon may set its own cookies once you click through and land on their site, which is covered by Amazon's cookie and privacy notices rather than this one.
Sponsored Phone Number
Some pages show a sponsored phone number that connects you with a company in our partner network, and we may be paid for the referral. Tapping it sets no cookies and shares no personal information. If you have allowed analytics, we record an anonymous event noting that a call button was tapped and on which page and placement, so we can see which pages lead to calls; it never includes the number you dial or anything identifying you. The call itself is then handled by that network and by your phone carrier, both of which fall under their own notices rather than this one.
Optional ZIP Code
If you use the optional ZIP code field beside a sponsored phone number, the resolved town and state are kept in your browser's session storage, not in a cookie, so the page stays personalised as you move around the Site. It is discarded when you close the tab, and clearing the field removes it straight away. Nothing is sent anywhere unless you type a ZIP code.
Managing Your Cookie Preferences
When you first visit our website, a cookie banner will appear asking for your consent. You can:
- Accept All - allows analytics cookies, and personalized advertising if ads are ever introduced
- Reject - turns off analytics tracking, and keeps any future advertising non-personalized
You can change your choice at any time using the Cookie Preferences link in the site footer. We also ask again automatically every 180 days, so a choice you made long ago never sticks indefinitely.
How to Control Cookies in Your Browser
Most web browsers allow you to control cookies through their settings. Here's how to manage cookies in common browsers:
- Chrome: Settings → Privacy and Security → Cookies and other site data
- Firefox: Settings → Privacy & Security → Cookies and Site Data
- Safari: Preferences → Privacy → Manage Website Data
- Edge: Settings → Cookies and site permissions → Cookies and site data
Third-Party Cookies
Google Analytics is the only third-party service running on this site. We use Google's Consent Mode v2 to pass your choice to Google: when analytics is off, no tracking cookies are dropped and Google receives only anonymous, cookieless signals with any advertising identifiers redacted. You can learn more about how Google uses your data at their Privacy & Terms site, or opt out of personalized advertising via Google's Ads Settings.
Changes to This Policy
We may update this Cookie Policy from time to time. Any changes will be posted on this page with an updated "Last updated" date. We encourage you to check back periodically.
Contact Us
If you have any questions about our use of cookies, feel free to reach out at [email protected] or visit our Contact page.