Site and standards
Privacy Policy
Short version: the calculators run in your browser, your inputs are not sent anywhere, and there is no account to create.
What happens to the numbers you type
Every calculation is performed by JavaScript running on your own device. Capacity, voltage, efficiency, destination and label values are not transmitted to this site or to any third party. Reloading or resetting a form clears them.
No device inventory, serial number or account is collected. There is nothing to sign up for.
Storage on your device
The site does not set cookies for the calculators and does not write your inputs to local storage. If a future feature needs to remember a preference, it will be stated on the page that uses it and limited to that preference.
Server logs and analytics
The site is designed to be served as static files. The hosting provider may keep standard access logs including IP address, user agent, requested path and timestamp. Those logs are controlled by the host, not by this site.
No analytics, advertising or session-recording script is embedded at the time of writing. If measurement is added later, it will be limited to aggregate tool events such as page path and result type, it will not include free-text input, and the change will be reflected on this page before it goes live.
Third-party links
Some pages link to manufacturer documentation, standards bodies or regulators. Those sites have their own policies. Following an outbound link means you leave this site, and this policy no longer applies.
Affiliate links, where they exist, are marked as such in context. See the affiliate disclosure.
Children
This site is a reference tool aimed at general audiences and does not knowingly collect information from anyone, including children.
Your choices
Because inputs never leave your browser, there is no stored profile to delete. Blocking JavaScript stops the calculators from running; the explanatory content on each page remains readable, which is a deliberate design choice.
Contact
Privacy questions go through the channel described on the contact page.
Changes
Material changes to this policy will be dated here. The review date below reflects the last substantive edit.
Last reviewed 6 November 2026.