Privacy Policy

What we collect

The calculators run entirely in your browser — the numbers you enter are never sent to our servers. We use privacy-respecting analytics (Google Analytics 4) to understand which tools are used and where pages come from, with events such as calculator starts and completions. No personally identifiable information is attached to these events.

Cookies

Analytics cookies may be set by GA4. You can block them with any browser setting or extension; every calculator continues to work fully without them.

Affiliate disclosure

Some pages may link to equipment retailers. If a link is an affiliate link, it will be disclosed on the page, and commissions never influence our calculator results or data.

Contact

Questions about this policy? Reach us through the contact information on the About page.