Privacy Policy
Last updated: 1 April 2026
Summary
- ✓All calculations happen in your browser — your numbers are never sent to our servers.
- ✓We do not sell your personal data to anyone, ever.
- ✓We use Google Analytics to understand how people use the site (anonymised).
- ✓We display ads via Google AdSense — Google may use cookies for ad personalisation.
- ✓You can opt out of personalised ads at any time through Google's settings.
1. Who We Are
CalcKit (calckit.co.uk) is a free online calculator website for UK businesses, freelancers, and individuals. We are based in the United Kingdom.
For questions about this policy, contact us at [email protected].
2. What Data We Collect
Calculator inputs
The numbers and values you enter into CalcKit calculators are processed entirely within your own browser using JavaScript. They are never transmitted to our servers, never stored, and never associated with your identity. When you close or refresh the page, your inputs are gone.
Analytics data
We use Google Analytics 4 to understand how visitors use CalcKit — which tools are most used, which pages people visit, and how they navigate the site. This data is anonymised and aggregated. We do not use it to identify individual users.
Google Analytics collects:
- Pages visited and time spent
- General geographic region (country/city — not precise location)
- Browser type and device category
- How you arrived at the site (search, direct, referral)
Advertising data
CalcKit displays advertisements served by Google AdSense. Google may use cookies to serve ads based on your previous visits to this and other websites. This is governed by Google's privacy policy, not ours.
Contact enquiries
If you email us, we will store your email address and the content of your message in order to respond to you. We do not add you to any mailing list without your explicit consent.
3. Cookies
CalcKit uses the following types of cookies:
| Cookie | Provider | Purpose | Duration |
|---|---|---|---|
| _ga, _ga_* | Google Analytics | Distinguishes unique visitors for analytics | 2 years |
| _gid | Google Analytics | Distinguishes users, expires quickly | 24 hours |
| IDE, DSID | Google Ads | Used for ad targeting and measurement | 13 months |
| NID, 1P_JAR | Used to personalise ads and remember preferences | 6 months |
You can control and delete cookies through your browser settings. Disabling cookies may affect some functionality. To opt out of Google Analytics across all websites, install the Google Analytics Opt-out Browser Add-on.
4. How We Use Your Data
We use the data we collect to:
- Understand which calculators are most useful so we can prioritise improvements
- Monitor site performance and fix technical problems
- Display relevant advertising to keep CalcKit free
- Respond to enquiries you send us directly
We do not use your data for:
- Selling to or sharing with third parties (other than as described above)
- Building individual user profiles
- Sending unsolicited marketing emails
- Any automated decision-making that affects you
5. Third-Party Services
CalcKit uses the following third-party services. Each has its own privacy policy:
6. Your Rights (UK GDPR)
Under UK GDPR, you have the following rights regarding your personal data:
To exercise any of these rights, email [email protected]. We will respond within 30 days.
If you are unhappy with how we have handled your data, you have the right to lodge a complaint with the Information Commissioner's Office (ICO).
7. Data Security
CalcKit is served over HTTPS. All data transmitted between your browser and our servers is encrypted in transit.
As noted above, calculator inputs are never transmitted to our servers at all — they stay entirely within your browser. This means there is no risk of your financial data being intercepted or accessed by us or anyone else.
8. Children's Privacy
CalcKit is not directed at children under 13. We do not knowingly collect personal data from children. If you believe a child has provided personal data to us, contact us at [email protected] and we will delete it promptly.
9. Changes to This Policy
We may update this privacy policy from time to time. The date at the top of this page shows when it was last revised. Continued use of CalcKit after any changes constitutes acceptance of the updated policy. If we make material changes, we will note them prominently on the site.
10. Contact Us
For any privacy-related questions or requests: