Privacy and advertising transparency

Information used by the tools

The public tools do not require an account. Calculator inputs are processed in your browser for the displayed result whenever the tool is designed for local calculation. We do not intentionally send names, email addresses, phone numbers, addresses or raw calculator values as analytics parameters.

The hosting and delivery providers may process ordinary technical request information, such as an IP address, browser details, requested URL and timestamps, for delivery, security and reliability. The site is delivered through Cloudflare, whose own privacy terms apply to its processing.

Cloudflare Privacy Policy

Analytics and local storage

If analytics is enabled, we use it to understand tool starts, completed results and related-tool navigation. We do not use analytics to make decisions about a person. The current public tools may also use browser local storage for an optional save or reminder feature; that information stays on your device until you remove it or clear your browser data.

Google advertising cookies

Google AdSense is not active on a page merely because this policy exists. If Google ads are enabled, Google and other advertising partners may place or read cookies and may use web beacons, IP addresses or similar identifiers to serve and measure ads. Advertising cookies can allow ads to be based on a user’s visits to this site or other sites, subject to the settings and laws that apply.

Users can review or change Google personalized advertising settings through Google Ads Settings. Some third-party vendors also provide their own opt-out controls. The actual ad technology providers used on the site will be disclosed through the applicable consent message or provider list before personalized advertising is served where consent is required.

How Google uses data when you use partner sites · Google Ads Settings · AboutAds opt-out information

Consent for regulated regions

Before serving personalized advertising to visitors in the European Economic Area, the United Kingdom or Switzerland, westc will use a Google-certified consent management platform integrated with the IAB Transparency and Consent Framework, or another legally appropriate configuration. Where required, the consent flow will explain the purposes and providers, offer a real choice, and allow preferences to be changed or withdrawn.

This policy is not a substitute for the consent message or for legal advice. Advertising will remain disabled for a configuration that has not completed the required consent and privacy review.

Messages sent to us

If you email us, we receive the email address, message and any information you choose to include. We use it to reply, investigate a correction or handle a site request. We keep correspondence only for as long as reasonably necessary for that purpose and do not sell it.

Third-party links and policy changes

Tool pages may link to official Korean services and other third-party websites. Their privacy practices are controlled by those operators, so review their policies before submitting information. We may update this policy when the site, analytics, advertising or applicable requirements change; the updated date above identifies the current version.