Privacy Policy

In short: the tools compute locally. Your resistor values, battery capacities and pin clicks are processed in your browser and are not sent to any server. There is no account system and nothing to upload.

What we do collect

• Standard web analytics (page views, referrer, device class) via a privacy-respecting analytics script; IP addresses are used only for aggregate statistics and abuse prevention.
• Advertising may be served via Google AdSense; Google's use of cookies is governed by Google's own privacy policy, and you can control personalized ads in Google's ad settings.
• Tool interaction events are limited to the tool name and simple numeric outcomes (e.g. "LED resistor, 150 Ω") for usage analytics — never your full inputs.

What we never collect

• No account, no email signup, no file uploads — none of the calculators post your data anywhere.
• No contact lists, no location tracking beyond the coarse country a browser reports, no fingerprinting.

Cookies

We do not set functional cookies. Advertising and analytics cookies may be set by third parties (Google) when those scripts load. You can block third-party cookies in your browser without affecting the calculators.

Changes

This policy may be updated as the site changes; the date of the last update is shown in the page footer source. Contact [email protected] with any questions.